Doctor Sisters

Zhang Yating, a senior at a medical college majoring in dentistry, is a pair of doctor sisters
. If she graduates smoothly, she will become a proud dentist. With graduation approaching, the school organizes internships at various hospitals. Zhang Yating returned to her hometown and, through connections, secured an internship at the city hospital. Yesterday, she met with Li Hu, the head of the dental department at the city hospital. Li Hu is a man in his fifties with nearly thirty years of experience in dentistry and is quite well-known in the city. Zhang Yating was rather nervous during their first meeting, but Li Hu was very approachable and always smiling. After asking Zhang Yating a few questions, he told her to come to the hospital the next day for her formal internship.

The next day, Zhang Yating got up very early and began getting ready. This was her first day of internship, and she wanted to make a good impression on the hospital leaders. Zhang Yating put on a casual t-shirt, paired with royal blue jeans and yellow canvas shoes. Looking at herself in the mirror, she thought she looked like a student. She shook her head and changed into a black dress. "Ugh, this is so unfashionable!" Zhang Yating muttered, then started rummaging through drawers and cabinets looking for clothes. After searching for a long time, she still couldn't find anything she liked. Zhang Yating sat on the bed, looking at the mountain of clothes, and pouted in dissatisfaction.

"Yating, come and eat!"

"I'm not eating!" Zhang Yating said stubbornly.

A moment later, the door opened, and a beautiful woman in pajamas walked in. The visitor was Zhang Yating's older sister, Zhang Yali. Zhang Yali was a few years older than Zhang Yating and worked in the obstetrics and gynecology department of the city hospital. Zhang Yating was able to get her dental internship thanks to Zhang Yali's connections.

Looking at the clothes on the bed, Zhang Yali asked in confusion, "Yating, what are you doing?" Zhang Yating pouted and said, "This is my first day of internship at the hospital, and I can't even find a suitable outfit. It's so frustrating!"

Zhang Yali smiled. She knew that although her younger sister was twenty-two years old, she sometimes acted like a child. Although she had said she would graduate soon and become an adult, she still seemed somewhat immature at times.

Zhang Yali patted her younger sister's shoulder and said, "You're still angry about this? Didn't you say you're an adult? Why are you acting like a child?"

"Sigh, sis, I'm just in a hurry. This is my first day of internship, and I need to make a good impression on my supervisor. After graduation, I want to work at the city hospital!"

Seeing Zhang Yating's serious expression, Zhang Yali smiled and said, "Come and eat. After you finish eating, come to my room and see if there are any clothes that suit you."

Zhang Yating slapped her forehead and said, "Oh right, how could I forget about you, sis? I'll go look at your clothes first before I eat, otherwise I won't feel at ease." After saying that, she ran to Zhang Yali's room in a flash.

Zhang Yali smiled helplessly and followed Zhang Yating to her room.

Zhang Yating threw her sister's clothes all over the bed and started trying them on one by one. Finally, Zhang Yating found an outfit she liked—a light gray business suit. After changing into the suit, a beautiful white-collar woman appeared before Zhang Yali. Zhang Yali's eyes lit up; the outfit certainly suited her younger sister, but something seemed missing.

Zhang Yali glanced at the slippers on Zhang Yating's feet and suddenly realized. She found an unopened pair of black stockings in the closet for Zhang Yating to wear, and then contributed a pair of black pointed-toe high heels of her own. Now, Zhang Yating was absolutely radiant, dressed like a mature, sophisticated white-collar woman.

Zhang Yating was also very satisfied with the outfit, constantly striking various poses in front of the mirror. Looking at her, Zhang Yali said, "Yating, this outfit does look good on you. But, I'm not trying to discourage you, but you're going to do an internship at the hospital, and you're dressed like a white-collar worker. It doesn't seem to suit your status, does it?"

Zhang Yating, however, didn't seem to care and said, "Sis, you don't understand. Doesn't dressing like this make me look more formal? It shows that I also value this internship."

Zhang Yali knew that her younger sister usually wouldn't change her mind once she made up her mind, so she let her be.

After they finished eating, they took a taxi to the hospital together.

When they arrived at the hospital lobby, Zhang Yali gave Zhang Yating some detailed instructions, telling her to work hard and ask questions if she didn't understand anything. She had already spoken to the head of the dental department, Li Hu. Zhang Yating said goodbye to her older sister somewhat impatiently and went straight to the dental department on the second floor of the hospital.

When Zhang Yating arrived at the dental office, it was not yet eight in the morning. None of her colleagues had come to work yet, and of course, Director Li Hu, the head of the department, was there either. Only a male doctor in his thirties was on duty.
Zhang Yating didn't know the doctor's name, so she just smiled slightly at him. When the doctor saw Zhang Yating's standard office attire, his mouth dropped open in an "O" shape. It was unclear whether he was surprised or captivated by Zhang Yating's beauty and good temperament.

Zhang Yating was always confident in her looks and figure. Back in school, she was a well-known beauty in her department, and her boyfriend was the school's undisputed prince charming. She always got a 100% head-turning rate on campus. In fact, Zhang Yating had worn a similar outfit during her summer vacation when she was looking for a job interview. When she wore that professional attire back to school, her head-turning rate skyrocketed to 200%—on average, everyone who saw her turned around twice! However, she left that outfit at school and hadn't brought it back, so she was wearing her older sister's. Therefore, Zhang Yating wasn't surprised at all by the male doctor's expression. She confidently sat in a chair, waiting for Director Li to arrive at work.

The male doctor saw Zhang Yating sitting in a chair, her full breasts prominently displayed, her two beautiful legs in black stockings tightly closed and slightly leaning to the side. Her elegance rivaled that of a flight attendant. The doctor stared for a full minute before snapping out of his daze, his face slightly flushed. He quickly sat up straight and focused on the medical record in front of him, though his eyes occasionally darted up to steal glances at Zhang Yating's legs.

After more than ten minutes, the doctor finally stopped agonizing over it, as his dental colleagues had all arrived, and he could go home. Before leaving, he gave Zhang Yating's stockinged legs one last, reluctant glare, swallowed hard, and hurried away.

The dentists were both men and women; five were on duty today, ranging in age from their thirties to their forties. Their reactions to Zhang Yating's attire varied. The two female dentists looked on with envy, while the three male dentists, like the ones who had just been on duty, secretly glanced at Zhang Yating's thighs. Zhang Yating, unfazed, politely greeted her colleagues. After a few pleasantries, everyone returned to their work.
Zhang Yating sat idly in her chair, feeling a little awkward. Fortunately, the head of the dental department, Li Hu, strolled in. The dentists greeted him, and Li Hu smiled and gestured for everyone to continue working, showing no airs of authority. This improved Zhang Yating's impression of Li Hu considerably.

"Head, you're here!" Zhang Yating stood up and greeted Li Hu.

Li Hu, still with his serene, Buddha-like demeanor, greeted her with a beaming smile before even speaking. He said warmly, "Xiao Zhang, you're here quite early!"

Zhang Yating was pleased with the compliment and replied with a smile, "Not at all, not at all, I just arrived!"

Li Hu nodded with a smile, then introduced Zhang Yating to everyone before leading her to the changing room.

Li Hu handed Zhang Yating a white medical gown, saying, "Xiao Zhang, go to the women's changing room next door and change into this white gown. From now on, you'll be interning with me. If you don't understand anything, just ask!"

Zhang Yating gratefully said, "Thank you, Director."

Li Hu patted her shoulder with a smile, gesturing for her to change next door.

Actually, the dental clinic had had many interns before, but Li Hu had never personally supervised any of them. They were usually assigned to a dentist, and Li Hu would simply sign his name on the internship certificate at the end of the internship. This time, on a whim, Li Hu decided to supervise the interns himself. On one hand, Zhang Yali had spoken to him on her behalf; since they worked at the same hospital, Li Hu wanted to give his colleague some face. On the other hand, although Li Hu appeared to be a kind-faced old man, he was actually a complete lecher in mainland China. Even at fifty, his sex drive was still high, and he frequently visited prostitutes in his spare time. Although he didn't dare to be too unrestrained in the hospital, he often took advantage of female patients under the guise of treatment.

Upon seeing Zhang Yating, this beautiful woman, he outwardly remained calm, but inwardly he was drooling with desire, especially seeing her in her professional attire. Director Li longed to lift Zhang Yating's smooth, beautiful legs and kiss them endlessly. However, Director Li ultimately exercised self-control; he didn't want to lose his job. Considering Zhang Yating's two-month internship and his position as the head of the dental department, he figured he was determined to take advantage of this naive young woman.

A short while later, Zhang Yating emerged from the women's changing room, and Li Hu's eyes lit up. The white medical gown was slightly too small for Zhang Yating's 1.68-meter frame, stretching her curves. With each step, the gown's hem would open, revealing her sexy, stockinged legs, making her even more alluring. Director Li, regaining his composure,

smiled knowingly and said, "Hmm, not bad, not bad!"

Zhang Yating didn't understand Director Li's meaning; she thought she looked even more like a doctor in the gown. She confidently and proudly puffed out her chest. Director Li nearly had a nosebleed and quickly led Zhang Yating to the studio.

The studio was a large room with four small single-bed-like adjustable chairs placed side by side. Just as Director Li was introducing the working environment to Zhang Yating, several patients arrived one after another, and several colleagues also put down their medical records and got busy. At this moment, a woman in her thirties walked in. She was of average appearance, with a round face and squinty eyes, but she was dressed very fashionably. As soon as she entered, she saw Li Hu and called out, "Director Li is here. Are you not busy now? I made an appointment yesterday."
Li Hu nodded with a smile, opened a small door to the side, and said to the woman, "Come in." Then he gestured to Zhang Yating and said, "Xiao Zhang, you come too!"

The woman and Zhang Yating followed Li Hu into a small room. This small room was where Director Li worked. The room was quite spacious, with a small desk in the corner, a cabinet for storing medicines next to it, and a height-adjustable chair in the middle.
Li Hu helped the young woman lie down on a chair and inquired about her symptoms. It turned out she was experiencing intermittent toothache. After observation, Li Hu quickly diagnosed it as gingivitis caused by internal heat. The young woman requested that Li Hu sever the nerve in her tooth. Li Hu asked Zhang Yating to assist. Zhang Yating was excited; theoretically, she was very skilled, but she had never practiced in a clinical setting—this was her first time.

"Yating, administer the anesthetic to the patient first. The medicine is in the cabinet," Li Hu instructed.

Zhang Yating opened the cabinet, which was filled with various medications. She had no idea where the anesthetic was, so she began searching layer by layer. Several minutes passed, and she still couldn't find it. Li Hu was discussing the patient's condition, and Zhang Yating didn't want to interrupt them. The first attempt was unsuccessful; she couldn't even find the anesthetic, and Zhang Yating felt some pressure.

Li Hu noticed that Zhang Yating hadn't moved for quite some time, so he turned around. He saw her bent over, her buttocks sticking out, nervously searching for the anesthetic. The hem of Zhang Yating's white coat was sticking up, revealing her rounded buttocks encased in a short skirt. Her stockinged legs were slightly bent, her calves taut and straight—a curve that was difficult to describe. Li Hu felt his penis stirring, but because there were patients nearby, he only glanced at her a few times before reluctantly looking away.

Finally, at the bottom of the cabinet, Zhang Yating found the anesthetic. She deftly opened the syringe and drew the anesthetic into the needle. Under Li Hu's guidance, Zhang Yating began to inject the patient with the anesthetic. The young woman nervously closed her eyes as she watched the syringe in Zhang Yating's hand. Zhang Yating was even more nervous, after all, this was her first clinical experience, and the head doctor was watching. What if she messed it up?

Li Hu told Zhang Yating to relax while slowly moving behind her, guiding her hand to correct her incorrect technique. Zhang Yating became even more nervous, completely unaware that Li Hu's lower body was already pressed against her plump buttocks. With trembling hands, Zhang Yating inserted the needle into the patient's mouth. Taking advantage of this moment, Li Hu gently nudged Zhang Yating's plump buttocks with his erect penis. Zhang Yating was extremely nervous and didn't notice Li Hu's suggestive actions. She began to slowly push the syringe.

Seeing Zhang Yating's focused expression, Li Hu boldly rubbed his penis against her buttocks a few times. He felt that Zhang Yating's buttocks were soft and elastic, far superior to those of inferior prostitutes. At this moment, Zhang Yating had already received the anesthetic injection, and Li Hu nimbly stepped back, maintaining a subtle distance from her.

"Hmm, not bad, don't be nervous, take it slow," Li Hu encouraged Zhang Yating.

Zhang Yating looked at Li Hu gratefully, completely unaware that she had just been groped quite a bit by him.
Next, Li Hu let Zhang Yating take the lead, while he intentionally or unintentionally caressed her buttocks from behind.

Zhang Yating gradually relaxed. After all, she was a professionally trained surgeon, and once she gained confidence, she proceeded with the minor surgery step by step.

Near the end, Zhang Yating felt something pressing against her buttocks. She had actually felt it earlier, but the surgery wasn't finished, and she didn't think much of it. Now, relaxed, she finally noticed something unusual.

Li Hu, unaware that Zhang Yating had noticed, continued to talk to her while rubbing his penis against her buttocks as needed. Li Hu's face was flushed red, and the waves of pleasure emanating from his glans were intoxicating, especially since he was molesting Zhang Yating in front of other patients; it felt even more stimulating.
Zhang Yating, having prior sexual experience, already knew that Li Hu was harassing her. She wanted to stop him, but firstly, Li Hu was the director, and she was going to be interning with him for the next few months; secondly, with patients present, it would be incredibly embarrassing to scream. Zhang Yating blushed and shifted slightly forward, trying to escape Li Hu's harassment. Li Hu, realizing he had been exposed, was startled, but seeing that Zhang Yating didn't object, he became even more emboldened and continued his lewd advances.

Zhang Yating frowned; she felt something hot moving between her buttocks through her clothes, like a venomous snake searching for her secret opening. Zhang Yating's heart suddenly skipped a beat. Since her boyfriend had gone to intern at a hospital in the south, she hadn't had sex in a long time.
Zhang Yating was a woman with a very strong sex drive. She and her boyfriend used to rent an apartment together, inseparable like newlyweds. Now that he was gone, she felt empty inside. Li Hu's lewd behavior suddenly aroused her; a warm sensation ran down her lower abdomen, and Zhang Yating's stockinged legs trembled slightly. She stopped working; she felt an intense desire mixed with the thrill of an affair. If Li Hu had simply undressed her and taken his place on the spot, perhaps she wouldn't have resisted.

At this moment, the young woman on the adjustable chair opened her eyes, making indistinct sounds, as if asking if it was over. Zhang Yating was startled and quickly finished up. Li Hu also took a step back at the opportune moment. After the young woman left, Zhang Yating's face was flushed. She didn't dare to look Li Hu in the eye. Li Hu pretended well, still wearing a smiling face, as if nothing had happened. In fact, he was very happy. He knew that since Zhang Yating hadn't resisted too much, there was still room for him and Zhang Yating to develop further.

Zhang Yating left the studio under the pretext of going to the restroom. Li Hu watched her back thoughtfully and said, "Two months, I don't believe I can't handle this little girl!"

Zhang Yating arrived at the restroom, her heart still pounding. A sudden feeling of guilt washed over her. A cleaning lady watched her curiously. Zhang Yating quickly slipped into the stall, took off her skirt and stockings, and discovered her underwear was stained with a considerable amount of semen. Thinking about Li Hu's earlier advances, Zhang Yating felt her face burning hot, and a primal desire rekindled within her.

She inserted her fingers into her wet vagina; a surge of fullness washed over her, causing her to shiver involuntarily. Her hand moved slowly in and out, the pleasure gushing out like a burst dam. She opened her mouth and moaned a few times, but afraid someone would hear, she tried to keep her voice down. Hearing footsteps, Zhang Yating stopped regretfully, took out some tissue to wipe her vulva, dressed, and walked out as if nothing had happened.

Seeing Li Hu's smiling face, Zhang Yating didn't know how to react. Li Hu was, after all, worldly-wise. In the following times, Li Hu simply guided Zhang Yating earnestly, without any unwanted advances. This gradually eased Zhang Yating's anxiety, and her embarrassment towards Li Hu lessened considerably.

That evening, because her sister Zhang Yali had to work overtime, Zhang Yating ate something outside and hurriedly returned to her sister's house. Three years ago, Zhang Yali was unable to conceive, and her husband, under pressure from his parents, submitted a divorce petition to her. Zhang Yali signed her name with a bitter smile, not wanting to put her husband in a difficult position. Her husband, feeling guilty, left the property to her. Zhang Yating usually stayed at her sister Zhang Yali's house during holidays, and this internship was no exception.

Returning to her sister's house, Zhang Yating felt extremely troubled. She was angry at Li Hu's advances, but the strange, stimulating pleasure also made her heart flutter.

Zhang Yating drank a glass of water and, feeling utterly bored, went to her sister Zhang Yali's room, turned on the computer, and started surfing the internet. She had just logged into QQ when a profile picture flashed. It was Gao Feng, Zhang Yating's boyfriend. He had gone to a hospital in the south for an internship some time ago, and the two hadn't been in contact for a long time.

"Yating, are you there?"

"Yeah, I'm here. Feng, long time no see.

How are you?" "I'm alright. How about you?"

"I'm fine too. Today is my first day at the hospital!"

"Oh, well... Yating... um..." Gao Feng seemed hesitant.

Yating found Gao Feng's stammering strange, but she immediately realized that he had something to say to her. Although they used to be inseparable, Gao Feng hadn't contacted her for a long time since he went south, and she felt uneasy, thinking that he was distant.

"What's wrong, Feng?"

"Yating, let's break up!"

"Why?" Although Zhang Yating was somewhat prepared, the sudden tragedy still made her say the words women love to say!

"I'm going to stay in the south to work in the future. My family introduced me to a girlfriend. He likes me a lot, and most importantly, his father is the president of this hospital..."

"..."

"I'm sorry, Yating, forget about me!"

When the other party's QQ avatar turned gray, Zhang Yating was still staring blankly at the screen. Her mind was filled with intermittently happy scenes with Gao Feng when they were in school. Unfortunately, those beautiful memories had vanished completely like a pile of weeds in Gao Feng's ruthless words. Two hot tears streamed down Zhang Yating's beautiful eyes. But Zhang Yating was a strong girl. After an unknown amount of time, she awoke from her reverie. She wiped the faint moisture from her eyes and gave a bitter smile. Gao Feng was a thing of the past, because she knew that even if Gao Feng was outstanding, he wasn't worth her heartache. Zhang Yating

kicked off her high heels and lay on the bed. As soon as she closed her eyes, memories flooded back like a torrent. Those once beautiful scenes now seemed as ferocious and terrifying as wild beasts. She wanted to fall asleep as soon as possible; if she fell asleep, she wouldn't think about anything, and she wouldn't be in pain anymore. However, she tossed and turned for a long time without being able to fall asleep.
Zhang Yating opened the drawer and took out two sleeping pills. She knew her older sister, Zhang Yali, had also suffered from insomnia since her divorce, and there were sleeping pills in the bedside table. With a sip of cold water, Zhang Yating drank the sleeping pills and gradually fell asleep.

Shortly after Zhang Yating fell asleep, Zhang Yali returned home. The obstetrics and gynecology department was very busy that day, and Zhang Yali had worked overtime until after 11 p.m. She had endured her exhaustion to settle the last patient. Back home, Zhang Yali took a comfortable hot shower and went to her room naked. The room light was on, and the screen saver on the computer screen was still happily flashing beautiful pictures. Her younger sister, Zhang Yating, was sleeping soundly on the bed, wearing stockings and a shirt. Zhang Yali shook her head. Her younger sister was still like a child, asleep without even taking off her clothes.

Zhang Yali lovingly covered her sister with a blanket, then turned off the computer and lights, and crawled into bed herself.
It had been many years since she had slept in the same bed with her sister. When her sister was little, she always insisted on sleeping with her, but as she grew older, they began to sleep separately. After all these years, lying next to her sister felt incredibly warm and comforting.

Zhang Yating, still asleep, turned over, draping an arm over Zhang Yali's neck, her head buried tightly against Zhang Yali's chest. Zhang Yali felt a strange unease rising within her. Since her divorce, she had never been so intimate with anyone. Even though it was her younger sister beside her, Zhang Yali's heart still skipped a beat.

Zhang Yating's nose was pressed against Zhang Yali's nipple, the breaths from her nostrils gently teasing it. Zhang Yali's body gradually reacted; her face flushed, and her nipples hardened. Zhang Yali's emotions were complex, a mixture of excitement, madness, and guilt. She nudged Zhang Yating with her hand, but Zhang Yating, still asleep, tightly embraced her neck, muttering in her sleep, her thin lips pressing against Zhang Yali's erect nipple.

Zhang Yating had a strange dream; she dreamt she was back in her childhood, her mother holding her in her arms, suckling sweet milk from her mother's nipple…

Zhang Yating's suckling motions were like a child's, sending waves of pleasure from Zhang Yali's nipple throughout her body. Zhang Yali's body grew hot, her breathing becoming heavy. For three years, her heightened female urges had tormented her late at night. Whenever she deeply craved sexual pleasure, she would masturbate to orgasm and then take two tranquilizers to fall into a deep sleep. Now, her younger sister was sucking on her nipple, a kind of incestuous pleasure she had never experienced before. She pushed her breast towards her sister's mouth, her trembling hand reaching for her own vulva. Her plump,
abalone-like vulva hadn't been touched by a man in three years. Her fingers skillfully probed the hot, throbbing opening, and Zhang Yali let out a suppressed moan. At that moment, Zhang Yating stopped sucking, and Zhang Yali felt a pang of disappointment. With her other hand, she tremblingly unbuttoned Zhang Yating's shirt and bra. Zhang Yating's full breasts bounced out like little rabbits. Zhang Yali's heart pounded wildly. Her hand was already covering her sister's breasts. Although Zhang Yating's breasts weren't as full as hers, their smooth and elastic skin was even better. Zhang Yali was extremely nervous, just like the excited and eager feeling she had when she first consummated her marriage with her husband.

Her vagina was already fully wet, and her right middle finger moved in and out happily. Zhang Yali stuck out her small tongue and quickly teased Zhang Yating's nipple with the tip of her tongue. Soon, Zhang Yating's small nipple seemed to grow bigger and harder. Suddenly, Zhang Yating let out a moan, and Zhang Yali quickly stopped moving, quickly pulling her finger out of her vagina. She was completely unaware that the sticky vaginal fluid had smeared onto the blanket. Zhang Yating only groaned and didn't wake up. Hearing her sister's heavy breathing, Zhang Yali finally relaxed. She eagerly inserted her right middle finger into her vagina, and her mouth took Zhang Yating's nipple into her mouth. Excitement made her heart ache. She continued to push with her right middle finger, and finally, with a comfortable moan, Zhang Yating reached orgasm, her legs clamping tightly around her finger…

The next day, Zhang Yating didn't wake up until after eight o'clock in the morning. She patted her slightly aching head and looked at the clock on the wall, then panicked. It seemed she was going to be late. She woke her sleeping sister, and the two sisters hurriedly washed up and ate breakfast without eating, then took a taxi to the hospital. During this time, Zhang Yali secretly observed her sister and, finding nothing wrong, relaxed.

Zhang Yating arrived at the department around 9:00 AM. Many patients had already arrived, and several others were waiting. Zhang Yating found Li Hu in his personal office and quickly explained why she was late. Li Hu had been a little flustered when he realized Zhang Yating hadn't come that morning; he was worried that his inappropriate behavior towards her the previous day would become a scandal. Thankfully, Zhang Yating was there, and judging from her expression, everything seemed fine, which put Li Hu at ease. Zhang Yating thought Li Hu would criticize her, as being late on the second day of her internship wasn't a good thing. Unfortunately, to her surprise, Li Hu was still all smiles and told Zhang Yating that if anything came up, she could call him beforehand and ask for leave. Zhang Yating was extremely grateful. She was already feeling wronged after her breakup yesterday, and today, even though she was late, Director Li didn't give her a hard time, which made Zhang Yating feel much better about Li Hu.

These past few days at work, Zhang Yating had been somewhat absent-minded, almost causing medical accidents several times while treating patients. If it weren't for Li Hu's timely reminders, Zhang Yating didn't think her internship could have continued normally. Li Hu had also spoken to Zhang Yating several times. Since Zhang Yating was troubled, Li Hu used a little trickery to get her to reveal her breakup. Li Hu comforted Zhang Yating like a loving father and even offered her a few days off to clear her head and adjust her mindset before returning to work. Zhang Yating was very grateful, but still insisted on going to work and leaving work every day. Li Hu could tell that Zhang Yating's mood was gradually improving. She was both grateful and affectionate towards him, and she seemed used to his occasional flirtatious advances and readily complied.
Zhang Yali had also noticed her sister's troubled state these past few days. During a break, the two sisters had a heart-to-heart talk. Zhang Yating, of course, wouldn't hide it from her sister and told her about her breakup with Gao Feng. Zhang Yali initially wanted to comfort her sister, but remembering her own painful divorce, she burst into tears first. The two sisters embraced and wept bitterly, feeling much better afterward.

Before she knew it, Zhang Yating had been interning at the hospital for over ten days. With Li Hu's help, she had learned a lot. Li Hu often praised her, saying that she could work at the hospital after graduation, and he would help her find a job. In just over ten days, Zhang Yating's feelings for Li Hu had reached their peak. Of course, Li Hu would still sometimes take advantage of her, but Zhang Yating had become used to it. Compared to Li Hu's kindness to her, these little things were nothing. Later, she gradually got used to Li Hu's flirtatious behavior, and the thrill made her unable to extricate herself from it.

Since Zhang Yali and her younger sister Zhang Yating started sleeping in the same bed, Zhang Yali gradually developed a liking for her sister's body. She experienced intense pleasure while masturbating by caressing her sister's breasts. For the past few days, almost every night Zhang Yali would give her sister a glass of juice laced with sleeping pills, and after her sister fell asleep, she would caress her body and masturbate. Zhang Yali's actions were no longer limited to caressing her sister's breasts; her sister's genitals had also been kissed by her small tongue.

Zhang Yating had also been feeling unwell these past few days. After drinking the juice her sister gave her at night, she would fall asleep quickly, but often woke up with a headache the next morning. That night, she secretly poured out the juice Zhang Yali had given her and lay in bed pretending to be asleep.

Just as Zhang Yating was about to fall asleep, a familiar figure walked in.

"Yating, Yating..." It was the voice of the older sister, Zhang Yali. Zhang Yating deliberately remained silent.

Seeing that her younger sister Zhang Yating didn't respond, Zhang Yali boldly turned on the light. She saw her younger sister Zhang Yating lying on the bed wearing only a small pair of white underwear, the blanket lying on the floor. Zhang Yali tiptoed onto the bed, looking at her sister's curvaceous figure, her eyes seemingly burning with desire. She leaned down naked, sticking out her small, scarlet tongue, the tip of which lightly brushed against Zhang Yating's nipple. Zhang Yating felt her forehead burning, and her nipples changed color. She wanted to open her eyes and interrupt her sister, but she held back. Since their parents' death, she had lived with her sister. Seeing the crow's feet around her eyes, a result of the divorce, saddened her greatly. She had also witnessed her sister masturbating more than once, all of which she kept deeply buried in her heart. She understood her sister's suffering.

Zhang Yali was unaware that Zhang Yating was pretending to be asleep. She continued kissing her sister's body as usual, first her breasts, then her lower abdomen, and finally her inner thighs. Zhang Yating's body trembled slightly; her inner desire suddenly erupted. Finally, she could no longer restrain herself and shakily opened her eyes to look at her sister, Zhang Yali. Zhang Yali's tongue was still wandering between Zhang Yating's thighs, and one hand was also grasping and kneading her own breast. Suddenly, she sensed something was wrong. Looking up, she saw her younger sister staring at her with wide eyes. Zhang Yali froze, never expecting her sister to wake up while she was playing with her body. She stammered, "Yating... I..." but couldn't say anything.

Zhang Yating hugged her sister's neck and whispered in Zhang Yali's ear, "Sister, don't say anything." Then, she actually stuck out her small tongue and began licking Zhang Yali's nipple. Zhang Yali seemed to understand something; her eyes welled up with tears. Before she could say anything to express her gratitude, the pleasure from her nipple ignited a burning desire within her. In return, Zhang Yali grabbed Zhang Yating's breasts with both hands, stroking them towards the nipples as if milking a cow. Zhang Yating felt extremely excited; this incestuous pleasure deeply impacted her heart. She sucked on her sister Zhang Yali's breast, occasionally letting out a soft moan.
Zhang Yali's fingers slipped between Zhang Yating's legs, revealing the wetness beneath the thick pubic hair. Her fingers easily found Zhang Yating's clitoris, her fingertips gently rubbing the semi-circular ball, or she would extend her middle finger and gently insert it into Zhang Yating's vagina, smearing the sweet nectar on the clitoris in the moist space. The smooth fingertips, lubricated by the lubrication, moved even faster on Zhang Yating's clitoris. Zhang Yating had already released her sister Zhang Yali's nipple, and she could no longer suppress her excited physiological reaction, wantonly moaning lewdly.
Zhang Yali inserted two fingers into Zhang Yating's wet and aroused vagina. After some exploration, the prominent G-spot became her target. After several attacks, Zhang Yating was completely exhausted and reached orgasm with a high-pitched moan. Her pink labia gripped Zhang Yali's fingers tightly, and Zhang Yating's arms clung tightly to her sister's neck, refusing to let go...

Zhang Yali gently patted her sister's smooth, satin-like back. Zhang Yating looked up and saw Zhang Yali's unsatisfied gaze; she could tell her sister wasn't yet satisfied. So she extended her small, cute tongue and licked her sister's nipple. Zhang Yali lay helplessly on the bed, waves of guilt-ridden pleasure washing over her. Zhang Yating's tongue licked from her sister's breast all the way down to her sister's thigh. Faced with her sister's wet and plump vulva, she didn't know what to do. She had experience giving oral sex to men, but she had never tried giving oral sex to women before.

Zhang Yali's pleasure abruptly stopped. Seeing her sister's troubled expression, she, burning with desire, rolled over and boldly straddled her sister's head. Her thick labia covered her sister's mouth, and Zhang Yating deeply sucked on her sister's labia. A mature and ambiguous feminine scent filled her nostrils, making her feel hazy. Zhang Yali touched her breasts and kept thrusting her genitals. Her clitoris was engorged and swollen. Zhang Yating occasionally stuck out her tongue to stimulate her clitoris. Finally, Zhang Yali reached orgasm in a series of rapid twists and turns of her waist. Sticky vaginal fluid clung to Zhang Yating's mouth and nose...

Zhang Yating and her sister fell asleep in each other's arms. Zhang Yali realized that the adult product website she usually only browsed but never bought from was about to receive a customer.

Just as Zhang Yali received the vibrator she had ordered online, trouble struck. It turned out that Zhang Yali had been working late that night, and while suturing a new mother's genitals, she had fallen asleep and hadn't done a proper job. The woman's genitals hadn't healed well for several days, and it wasn't until the stitches were removed that it was discovered, requiring re-stitching. This time, the woman's family was outraged, causing a scene at the hospital. To prevent the situation from escalating, the hospital leadership had already compensated the woman a considerable sum. Zhang Yali, bearing primary responsibility for the incident, was suspended from work and placed under house arrest. Zhang Yating was extremely worried; her sister was already divorced, and if she lost her job as well, things would be unbearable. Later, she learned that Li Hu's cousin was the vice president of the hospital in charge of the obstetrics and gynecology department. She figured if her cousin intervened, she could protect Zhang Yali. Zhang Yating decided to ask Li Hu for help.

Li Hu had been riding high these past few days. He felt he had almost won over the beautiful intern, Zhang Yating; at least on the surface, she seemed to have been influenced. The fact that she hadn't objected to his occasional groping was the best proof. He needed to find the right opportunity to make his move.

That day, Li Hu strolled leisurely into the department and saw Zhang Yating looking anxious in the corridor.
"What's wrong, Xiao Zhang?" Li Hu asked kindly.

"My sister's in trouble..." Zhang Yating recounted the events to Li Hu.

When Li Hu heard that Zhang Yating needed his help, he was secretly delighted. He frowned and pretended to think for a moment before saying, "This matter isn't easy to handle. Don't worry, I'll go find my cousin right now." Li Hu turned and left.
After quite a while, Li Hu returned, his forehead covered in sweat. Actually, he had deliberately run a short distance so that Zhang Yating would see it. Zhang Yating asked anxiously, "How did it go, Director Li? What did the hospital director say?"
Li Hu, scratching his teeth and looking pessimistic, said, "This matter has had a terrible impact. The hospital leaders have all demanded severe punishment. However, I went to great lengths to beg my cousin. She'll try to find a way. If it really doesn't work, I'll go again this afternoon. Don't worry too much!" Actually, this matter could be a big or small issue. The patient's family had already been appeased. The hospital sending Zhang Yating home to reflect was just a minor punishment. In a few days, once things calmed down, she would be allowed to return to work. Li Hu had overheard some rumors circulating among the leaders and was deliberately trying to scare Zhang Yating, hoping to take all the credit for the incident.
Zhang Yating fell for it. Although she was uneasy, she kept thanking Li Hu.
In the afternoon, Director Li pretended to go to the dean's office again, but in reality, he just chatted with his cousin. When he returned, he was all high and mighty, arrogantly telling the anxious Zhang Yali, "It's basically all settled. Your sister will be back at work in a few days." Zhang Yating, both admiring and grateful to Li Hu, said, "Director Li, thank you. If there's anything we sisters can do for you in the future, just let us know!" Li Hu smiled and said, "Look at you, it's not that serious. Oh, I actually do have something to ask you. Look, I need to get my teeth cleaned. You've been at our clinic for so long, but you haven't cleaned a patient's teeth yet, have you? You can't neglect your basic skills. Perfect, I, Old Li, will be your guinea pig first."

Zhang Yating was amused by Li Hu's words and playfully said, "Yes, sir."

At this time, there were no patients in the dental clinic. All the colleagues had gone to the office to write medical records and chat, leaving the spacious room feeling empty. Li Hu opened his small workspace, let Zhang Yating in, and then secretly locked the door from the inside.

Zhang Yating was looking for dental cleaning supplies and solution, completely unaware of Li Hu's actions. Li Hu, reclining in the adjustable chair, said, "Xiao Zhang, take your time, don't be nervous." Zhang Yating smiled at Li Hu while busy with her work; her beautiful face paired with an angelic smile almost stunned Li Hu.

Zhang Yating walked to Li Hu's side with the solution, and Li Hu opened his mouth, revealing a mouthful of white teeth.

"The director's teeth are pretty clean, aren't they?" Zhang Yating thought to herself, but she didn't think much of it.
Zhang Yating leaned forward, about to start working, when suddenly she felt something hard pressing against her genitals. She looked down and saw that Li Hu's elbow was intentionally or unintentionally leaning outwards, resting right between her legs. Zhang Yating was still wearing a short skirt and black high heels, but her stockings were now flesh-colored.
Zhang Yating blushed slightly and felt flustered. Embarrassed, she moved aside and continued working. Zhang Yating finally calmed down and began working, slightly crouching down. At that moment, she felt Li Hu's arm rest on her thigh, but she didn't pay much attention. The arm didn't stop there; a large hand lightly brushed across the inside of Zhang Yating's thigh, making her leg feel numb, tingly, and itchy.
Seeing Zhang Yating's lack of reaction, Li Hu grew bolder. He placed his entire palm on Zhang Yating's thigh; her stockinged thigh was cool and slippery, making Li Hu feel incredibly uncomfortable, and his penis gradually became aroused. Zhang Yating felt the hot palm pressed against her thigh, and although she wanted to pull away, she had no strength. Li Hu took advantage of the situation, gently caressing Zhang Yating's thigh, his palm slowly moving towards her groin. Zhang Yating felt a strange pleasure spreading from her groin throughout her body. She tried her best to suppress the moans that wanted to escape her lips, her legs slightly parted, as if tacitly agreeing to Li Hu's actions.
Suddenly, Zhang Yating cried out and took a step back. Li Hu's fingers had finally touched her clitoris. Even through her clothes, the sensitive girl's body clearly couldn't withstand such stimulation. Li Hu quickly reached out and scratched his face to cover it up, though both of them knew what was going on. Zhang Yating blushed and stood there stunned for a few seconds before finally stepping forward to clean Li Hu's teeth. Li Hu's large hand moved again, this time more carefully, his palm hovering over Zhang Yating's thigh. While cleaning Li Hu's teeth, Zhang Yating endured his harassment, feeling a strange stimulation as her body slowly warmed up.

Li Hu had already sensed the changes in Zhang Yating's body. He steeled himself and placed his large hand on her buttocks. Since Zhang Yating was wearing a short skirt, Li Hu easily slipped his hand under the skirt, caressing her plump buttocks through her stockings. Zhang Yating froze, feeling Li Hu's hot hand roaming over her cleft, sometimes pinching her buttocks, sometimes moving to her vulva. Zhang Yating's mouth slightly parted; Li Hu's hand offered a small comfort to her thirsty heart.

A burning desire instantly filled her mind; she only wanted Li Hu to play with her body to his heart's content. Seeing Zhang Yating's submissive demeanor, Li Hu was overjoyed. He tightened his grip, his experienced hand relentlessly kneading Zhang Yating's clitoris. Soon, Zhang Yating's thighs began to tremble, as if vaginal fluid was flowing from her vagina, soaking her panties and stockings.

Zhang Yating was no longer able to work. She squatted with her legs spread apart, Li Hu's large hand, like a cruise missile, pressing against her between them. With each kneading motion, low moans escaped Zhang Yating's lips.

Li Hu was already burning with desire, but his rich sexual experience kept him somewhat sober. He wanted to slowly enjoy Zhang Yating's body, and he was worried that if he took advantage of her now, Zhang Yating might regret it. He knew the principle of letting things take their natural course, and he would use every means to make Zhang Yating willingly offer her precious body.
Suddenly, Li Hu grabbed Zhang Yating's arm and pulled her into his embrace. Caught off guard, Zhang Yating fell into his arms. Her left foot was on the ground, while her right leg was bent and supporting her on the adjustable chair. Her black high heels slipped off her heels and dangled from her toes, swaying back and forth, making her look even more sexy and wild. Zhang Yating opened her eyes and found herself facing Li Hu's wrinkled face. Li Hu opened his mouth and thrust his wide tongue towards her small mouth. Zhang Yating quickly closed her eyes.

Zhang Yating felt something soft and moist gently teasing her lips. That thing seemed unsatisfied, desperately pushing into her mouth, searching for her tongue, the coating of her tongue, and those sensitive spots inside her mouth. She shivered as if electrocuted, her body hair standing on end, goosebumps rising all over her skin. This reminded her of when she was little, playing with her sister's puppy, the puppy's tongue licking her lips. Her reaction then was the same as now—her heart pounding, her whole body limp. She never imagined that after so many years, Director Li would make her experience that heart-wrenching feeling again.

Li Hu used all his skills, sometimes licking Zhang Yating's lips with his tongue, sometimes delving deep into her mouth to find that soft spot. Finally, he lured Zhang Yating's small tongue out, and Li Hu's lips immediately caught it and put it into his own mouth. Zhang Yating's tongue was as soft and juicy as delicious oyster meat, and Li Hu enjoyed it immensely. Zhang Yating simply opened her mouth and let Li Hu take advantage of her. Before long, her mouth was full of saliva, and the sticky saliva, like honey, was sucked into Li Hu's mouth and swallowed.

Li Hu's hands were not idle either. He reached behind Zhang Yating's back and unhooked her bra, his fingers slowly sliding down Zhang Yating's spine until they reached Zhang Yating's buttocks. Zhang Yating felt an itch in her back, a tingling numbness in her tailbone. Her body trembled involuntarily. The tingling, numbness, and itching sensation didn't disappear instantly but instead permeated her entire being. The desire within her seemed to be doused with gasoline, igniting completely.

Zhang Yating's mind went blank; primal desire made her lose herself. She went wild, and with a thud, her high heels fell to the ground. Zhang Yating's tongue was no longer passively allowed to be sucked by Li Hu. She abruptly withdrew her tongue, her thin lips capturing Li Hu's tongue and taking it into her mouth. Li Hu felt his tongue being frantically sucked by Zhang Yating, and he began to fight back. Their tongues darted back and forth, intertwining like two venomous snakes of the opposite sex. Their saliva mingled, indistinguishable from one another, trickling down their cheeks and chests.

After a few minutes of this tug-of-war, both were panting heavily; kissing was indeed tiring.
Li Hu lay on the reclining chair, breathing heavily, while Zhang Yating squatted beside him, also panting. Her face was flushed with excitement, as if painted with rouge. Li Hu took Zhang Yating's right hand and placed it between his legs; his penis was already erect, pressing against his crotch like a small tent. Zhang Yating obediently kneaded Li Hu's penis. Although Li Hu was over fifty, his penis was surprisingly large and impressive. Zhang Yating touched Li Hu's penis and compared it to Gao Feng's, finding that Li Hu's was slightly superior.

Li Hu reached out his right hand and unbuttoned Zhang Yating's white coat. Underneath, Zhang Yating was only wearing a black camisole with a low neckline, revealing a hint of cleavage. Li Hu's lust was aroused, and his penis swelled again. Li Hu used his thumb and forefinger to flick and pull downwards, a movement as graceful as Kasyapa's flower-offering gesture. Since Zhang Yating's bra hooks had already been unhooked, the black camisole and bra were pulled down by Li Hu. Zhang Yating's breasts trembled and were exposed.

Zhang Yating's breasts were semi-circular, like bowls turned upside down on her chest. Her fair skin was smooth and oily, and her pink nipples, like small peanuts, dotted her breasts. Her areolas were small and light in color, clearly indicating that they hadn't been touched many times. Li Hu seemed to have found a treasure. His legendary finger-pinching technique changed various shapes as he moved his fingers across Zhang Yating's chest. The pink nipples couldn't withstand the teasing of Li Hu, a master of lust, and soon became engorged and swollen, turning a dark red color.

Zhang Yating's sensitive body trembled again. She moaned and desperately kneaded Li Hu's penis. A warm current seemed to flow from her abdomen to her entire body. She felt something flowing out of her vagina. If it weren't for her panties and stockings, the liquid would have dripped onto the floor.

Li Hu made Zhang Yating climb onto the lift chair with her head facing his legs. Zhang Yating carefully spread her legs and straddled Li Hu's head. Her upper body leaned forward, her head directly facing the small tent in Li Hu's crotch. This position was very lewd. Li Hu's head was directly facing between Zhang Yating's legs. Underneath her flesh-colored stockings was a white pair of panties. The panties and stockings were already wet with vaginal fluid, making them look almost transparent. Li Hu smelled the distinctive scent of a woman's genitals. She pulled down her stockings and panties, revealing two tender pink labia covered in a trickle of vaginal fluid beneath the thick pubic hair.
Li Hu embraced Zhang Yating's slender waist and extended his thick tongue, savoring the taste of her genitals. Zhang Yating felt an unbearable tingling and itching in her vagina, a surge of intense pleasure washing over her. She frantically unbuckled Li Hu's belt and reached into his crotch, pulling out his magnificent penis.

Li Hu's penis wasn't very long, but its diameter was considerable. The engorged foreskin had already retracted, revealing the egg-shaped glans, from which a thin trickle of vaginal fluid still flowed. Zhang Yating instinctively smelled a strong stench of urine entering her nostrils. This unpleasant smell only excited her more. She thrust her hips in rhythm with Li Hu's attacks on her vagina while simultaneously opening her mouth to envelop the large, dark red glans. Her mouth was slowly filled, and she moved it up and down like a child seeing their favorite popsicle.

Li Hu felt his penis being held in a warm, moist mouth, the small tongue occasionally brushing against his glans. Li Hu thrust his hips, seemingly wanting to burst Zhang Yating's mouth open. Zhang Yating, without hesitation, mustered her courage and swallowed Li Hu's entire penis. A wave of nausea washed over her; she spat out Li Hu's penis, then spat it back into her mouth, the stomach acid mixed with saliva flowing onto Li Hu's testicles and pubic hair.

Li Hu's mouth was full of the vaginal fluid secreted by Zhang Yating, and he felt Zhang Yating's body convulsing as if she was about to climax. Li Hu stopped his movements at the right moment. Li Hu suddenly asked, "Ya Ting, do you want my big cock?"

Zhang Ya Ting, though her back was to Li Hu, was still blushing with embarrassment. However, Li Hu's lewd words excited her greatly. Besides, Li Hu had stopped just as she was about to climax, and she was now burning with desire. She might have let any man have his way with her, but she was too embarrassed to answer such a blatant question.
"Want a cock?" Li Hu asked, pressing his finger against Zhang Ya Ting's vulva.

Zhang Ya Ting trembled and whispered, "Yes."

"Want a cock? Be more specific?" Li Hu said deliberately.

"Want a cock to fuck my vulva..." Zhang Ya Ting said obediently. Saying this, she even felt excited.

"Suck my cock a few more times," Li Hu commanded.

Zhang Yating obediently opened her mouth and took Li Hu's cock in, stroking it a few times.

Li Hu was very satisfied and said, "Stick out your tongue and lick my glans, oh...yes...lick my testicles a few more times...um...okay..."

Zhang Yating was very obedient now, doing whatever Li Hu told her to do. Li Hu was very proud, having such a beautiful college student sucking his cock under his command made him feel both mentally and physically satisfied.
"Get down, stick your ass out, I'm going to fuck your cunt!" Li Hu commanded.

Zhang Yating immediately rolled over and got off the ground. Although her legs felt a little numb, she still obediently bent over, sticking out her sexy little ass and resting her arms on the lift chair.

Li Hu also flipped down from the adjustable chair and saw the alluring round buttocks waiting for him. Li Hu took two steps forward and placed the head of his penis against Zhang Yating's vagina, moving it up and down but refusing to go in. Zhang Yating felt something warm pressing against her entrance, adjusted her buttocks to receive it, but little did she know that the thing was like a slippery eel, refusing to enter. Zhang Yating twisted her waist, letting out what seemed like pleading moans, when suddenly she cried out, and Li Hu's penis, like a red-hot torch, plunged into her vagina.

Zhang Yating felt her body lighten as if she were ascending to heaven, the overwhelming pleasure filling her entire body, her lonely heart seemingly finding immense satisfaction. This was much more comfortable than masturbating with her sister. Zhang Yating writhed her hips, letting out moans that were both joyful and somewhat painful. Li Hu felt his penis enter a narrow, moist, and elastic place; the hot depths, the smooth, tender flesh around his glans like an elastic band, were simply indescribable.

Li Hu thrust vigorously, each time plunging his entire penis into Zhang Yating's vagina. The panting and moans mingled together, sounding so hot and wanton.

After dozens of thrusts, Zhang Yating reached orgasm; after all, their foreplay had been too long. Zhang Yating's waist slumped down, her legs trembling uncontrollably. Li Hu knew Zhang Yating was getting tired, so he slowed down and changed to nine shallow thrusts followed by one deep one. His glans gently rubbed against the tip of Zhang Yating's vagina, and after nine thrusts, he suddenly reached her G-spot. Zhang Yating was so excited that she couldn't open her eyes. She half-closed her phoenix eyes and continued to enjoy this blissful moment.

With a series of rapid "slap slap slap" sounds, Li Hu began his final thrusts. Zhang Yating knew Li Hu was close to climax. She mustered all her strength and squeezed Li Hu's penis tightly. Li Hu grabbed Zhang Yating's breasts and thrust his hips powerfully, finally ejaculating deep into Zhang Yating's vagina with a howl that was somewhere between a human and a beast. Zhang Yating cried out and reached climax again...
After work, Zhang Yating returned to her sister's place. She greeted her sister, Zhang Yali, and went into the bathroom to take a shower, afraid that her sister would see the marks on her body. While showering, Zhang Yating recalled her crazy encounter with Li Hu, and her body even became aroused again. However, she quickly stopped her thoughts. If Li Hu hadn't been old and suffering from kidney failure, she couldn't imagine whether she could have gone home today. However, she truly couldn't forget that blissful moment.

Zhang Yali looked dejected, so Zhang Yating quickly told her sister what Li Hu had told her, which put Zhang Yali at ease.

A week later, just as Li Hu had said, Zhang Yali was notified by the hospital leadership to return to work without even a reprimand. This made both Zhang Yating and her sister extremely grateful to Li Hu. During this time, Zhang Yating practically became Li Hu's sex slave, doing whatever he commanded, no matter how shameful. During work, Li Hu routinely took advantage of Zhang Yating. Sometimes, he would even have her insert a vibrator into her vagina while he treated patients, and he would casually turn the remote on and off repeatedly. Zhang Yating had to concentrate on treating patients while also dealing with Li Hu's sudden advances, which was incredibly awkward.
Sometimes, Li Hu would sit behind his desk in his studio, and Zhang Yating would kneel under the desk to perform oral sex on him. Even when colleagues or patients came in, Zhang Yating would continue. Some colleagues even wondered if they had misjudged their eyes, as they clearly saw the director and Zhang Yating go in together, but when they went in, they only saw the director; Zhang Yating had vanished into thin air! Of course, having sex with Zhang Yating once a day was essential, and Director Li enjoyed it immensely. Their lovemaking left its mark on the chair, the desk, and even the corner of the wall. Zhang Yali also enjoyed it, becoming more open and bolder than before. She felt something was missing if she didn't have sex every day.

Before long, Zhang Yating's internship ended, and she faced graduation. Li Hu, through some unknown means, finally managed to place Zhang Yating in his department. After a few more months, she would become a full-fledged doctor.
Zhang Yali was very grateful to Li Hu for everything he had done for her sister. She was able to work at the hospital thanks to Li Hu. She had long wanted to treat Li Hu to a meal, but had never had the time. Now that her sister had a job, Zhang Yali informed Li Hu that she had decided to treat him to a meal. Li Hu was very easygoing. He made an excuse, saying he didn't like eating out and would be extremely honored if Zhang Yali and her sister could cook him a meal. Zhang Yali readily agreed.

After work, the two sisters busied themselves preparing a large table of food, while Li Hu brought a bottle of baijiu and a bottle of red wine. The three of them ate, drank, and chatted happily. They ate until after nine o'clock in the evening, and Li Hu, unable to hold his liquor, soon passed out. Of course, no one noticed that he was pretending to be drunk; as the saying goes, his real intention wasn't in the wine.
Seeing that it was already ten o'clock at night, the two sisters were too embarrassed to wake Li Hu. They covered the drunken Li Hu, who was lying on the sofa, with a blanket and went back to their room to sleep.

At 11 PM, Zhang Yali couldn't sleep and wanted to play lesbian games with her younger sister. Zhang Yating, however, was also filled with lust, wanting to have sex with Li Hu while her sister slept. The two hid on a bed, and Zhang Yali took out a vibrator. They began to massage each other's bodies. Just as they were enjoying themselves, the door suddenly opened, and a naked man appeared before the sisters. The room was only lit by a bedside lamp, making the atmosphere even more ambiguous. In the soft light, Zhang Yali recognized the man as Li Hu.

Actually, Li Hu was pretending to be drunk; he wanted to wait for Zhang Yali to fall asleep and then secretly have sex with Zhang Yating. Little did he know that he would make an even bigger discovery. Zhang Yali was utterly stunned by Li Hu's naked body, especially by his engorged and throbbing penis. She suddenly felt an urge to kiss it, momentarily forgetting that the vibrator was still buzzing inside her. Li Hu, staring at Zhang Yali's naked body, almost drooled. They'd seen and touched Zhang Yating's body countless times, and after so long, it was almost devoid of novelty. But Zhang Yali's body was a first for him.

A few seconds later, Zhang Yali finally came to her senses. She gasped and quickly covered herself and her sister with the blankets, only then realizing the vibrator was still inside her. She gently pulled it out, and facing Li Hu, she was so ashamed she could barely lift her head.
Zhang Yali lowered her head and said, "You go out first!"

Unexpectedly, Li Hu shamelessly said, "I'm not going out." He then plopped down on the edge of the bed, his penis trembling slightly. Zhang Yali felt a flutter in her heart, while Zhang Yating felt a strange intimacy with that ugly thing.
"What do you want?" Zhang Yali was straightforward; she didn't want to beat around the bush.

"I don't want anything!" Li Hu was surprisingly adept at

playing hard to get. Zhang Yali was furious. Her past divorce had caused her immense pain, and she had finally found solace in her younger sister. She knew this wasn't a long-term solution, but now the scandal was finally out in the open. She didn't care if Li Hu made a scene, but how could her sister face anyone? It was all her fault! Zhang Yali roared, "I'm a shameless woman, now you know that! Go ahead and shout it everywhere. I'd rather not live anymore! Tell me, what do you want?" Tears streamed down Zhang Yali's face; she was on the verge of collapse. Zhang Yating, seeing her sister like this, was also terrified and didn't know what to do. She could only hug her sister and sob softly.

Li Hu said calmly, "Ya Li, calm down. I told you, I really don't want to do anything. Actually, Ya Ting and I have already... well, you know. Now you know why I'm helping you and Ya Ting so much, right?"
Zhang Ya Li was stunned by Li Hu's words. She looked at Zhang Ya Ting in disbelief. Zhang Ya Ting couldn't lie. She nodded gently with tears in her eyes and said, "Sister, don't cry. I did it voluntarily. Director Li didn't force me!"

Zhang Ya Li really didn't know what to do. What Li Hu said was too shocking for her to believe. Her face was somewhat petrified, and she stared blankly at the corner of the wall.

"Actually, I know your pain. Ya-ting also told me that you're a woman who needs comforting. Perhaps, perhaps I'm not worthy. Okay, let's pretend today's events never happened. I will always keep your secret of being number one. Of course, if you also object to my relationship with Ya-ting, then I promise I will leave her. If you're still worried, then... then I'll find an opportunity to retire early." Li Hu finished speaking these righteous words and turned to leave. In reality, this was his way of playing hard to get; these words were all meant for Ya-ting. The naive Ya-ting fell for it. Li Hu had already left an imprint on her heart; at least she felt that Li Hu was a relatively reliable man.
Suddenly, Zhang Yating jumped out of bed naked. She hugged Li Hu from behind and cried, "Director Li, don't go!"

Li Hu, seeing his words had worked, felt a surge of smugness, but he maintained his righteous demeanor and said without turning around, "Yating, let go. I, Old Li, have done countless good deeds over the years. Perhaps I've made a mistake this time. I... I'm sorry..." At the end, Director Li even choked up.

This sudden change deeply saddened Zhang Yating. She felt she had wronged Li Hu, and she didn't want to lose him. The only way now was to drag her sister into it too, so her sister wouldn't stop her from seeing Li Hu, and her sister wouldn't have to suffer from sexual torment every day. Zhang Yating turned to her sister and shouted, "Sister, say something! I can accept you, so why can't you accept the two of us? Don't you want a man?" These words made Zhang Yali shudder. Looking at her sister and Li Hu, and thinking about her loneliness every night, she hesitated for a moment before making her decision. Zhang Yali said dejectedly, "Wait a minute!"

Li Hu was secretly delighted, but still said expressionlessly, "Don't worry, I won't tell anyone."

Zhang Yali was extremely embarrassed. She suddenly said softly, "Director Li, don't leave. Will you stay with us tonight?" After saying that, she lowered her head even further.

Overjoyed at the prospect of success, Li Hu turned around and said resolutely, "Yali, don't worry, from now on, I, Li Hu, will take care of anything that happens to you two sisters."

Zhang Yating happily pushed Li Hu to the bedside and said, "Sister, I'll let you have your way first. I know you... hehe."

Zhang Yali blushed deeply, lifted the blanket, and whispered, "Director Li, please be gentle later. I haven't been loved by a man in so long... so long."

Li Hu didn't speak; he was completely captivated by Zhang Yali's body. Zhang Yali and Zhang Yating were about the same height, except Zhang Yating was slightly thinner, while Zhang Yali, having been married, was somewhat voluptuous. Her deep red nipples clearly showed they had been plucked countless times, but Li Hu didn't find it disappointing. On the contrary, the charm of a mature woman made Li Hu even more infatuated. Zhang Yali stood with her legs together and her hands on her private parts, looking coy and alluring. Li Hu had already gently placed his fingertips on her nipples, teasing them until they became erect. Li Hu opened his mouth and kissed Zhang Yali's lips, finding them full and sexy, a different kind of allure compared to Zhang Yating's.

Li Hu used both his hands and mouth, and Zhang Yali's body trembled slightly. Involuntarily, she reached out and grasped Li Hu's penis, stroking it up and down. This experienced woman knew how to masturbate; soon, Li Hu's penis was throbbing with desire. Li Hu's tongue licked from Zhang Yali's lips to her breasts and then to her vulva, and Zhang Yali let out soft moans. Li Hu's tongue touched Zhang Yali's clitoris, the intoxicating sensation sending a jolt through her, her fingers gripping the sheets tightly.

Li Hu parted Zhang Yali's thighs, finding her already overflowing with desire. He no longer bothered with teasing her, lifting her legs and thrusting his penis in completely. Zhang Yali's body convulsed a few times, her eyes seeming to well up with tears. Three years had passed since a man had given her such sexual bliss; a long-awaited pleasure filled her entire body. Li Hu's movements were slow and gentle, moving Zhang Yali. After all, men often acted wildly towards women, rarely showing any tenderness.

As Li Hu thrust in and out, Zhang Yali gradually reached a climax. Her thighs involuntarily draped over Li Hu's shoulders, and the pleasure from her vagina made her incoherent: "Ah...so good...ah so good...fuck me...harder...
love your big cock...ah...um..."

Seeing her sister moaning under Li Hu's crotch, Zhang Yating couldn't take it anymore. She sat beside her sister, spreading her legs to reveal her vagina, which was full of lustful fluids. Zhang Yali picked up the vibrator and inserted it into her sister's vagina. The two sisters sang together!

Li Hu was very pleased. He kneaded Zhang Yating's breasts while fucking Zhang Yali, listening to the two girls' wanton moans. He almost ejaculated. Li Hu quickly pulled out his penis, paused for a moment, and then had Zhang Yali lie face down on the bed. Director Li penetrated her from behind, and after some movement, Zhang Yali reached orgasm while trembling. Zhang Yating, who had been unable to hold back any longer, saw her sister reach orgasm and shouted, "My turn, my turn!" She consciously lay face down on the bed, sticking out her sexy little buttocks. Li Hu pulled out his penis and thrust it in deeply, and Zhang Yating moaned with pleasure.

If Zhang Yali was a little shy about having sex with Li Hu for the first time, Zhang Yating, who often had sex with Li Hu, was unrestrained. She kept asking Li Hu to change positions, and her words were extremely lewd. Zhang Yali felt her face burning when she heard them. Li Hu thrust joyfully in and out of Zhang Yating's vagina and reached orgasm together with Zhang Yating.

Li Hu lay on the bed, feeling he could die without regrets. Just then, a wet mouth enveloped his limp penis; the experienced oral sex told him it was Zhang Yali performing oral sex on him. Completely uninhibited, Zhang Yali was even more frenzied and insatiable than Zhang Yating; she wanted more. As soon as

Li Hu's penis hardened slightly, she eagerly mounted him, beginning her woman-on-top assault. Before Zhang Yali could reach orgasm, Li Hu couldn't continue. The pain wasn't just about having no women, but also about having too many. Li Hu was caught off guard. Luckily, he had brought a Viagra with him. With the help of the Viagra, Li Hu finally managed to deal with the two women's incessant demands and then drifted off to sleep...

Zhang Yating was a senior at a medical college, majoring in dentistry. If she could graduate smoothly, she would become a proud dentist. As graduation approached, the school organized internships for students at various hospitals. Zhang Yating returned to her hometown and, through connections, secured an internship at the city hospital. Yesterday, she met with Li Hu, the director of the dental department at the city hospital. Li Hu was an elderly man in his fifties who had been practicing dentistry for nearly thirty years and was quite well-known in the city. Zhang Yating was rather nervous during their first meeting, but Li Hu was very kind and approachable, always with a smile on his face. After asking Zhang Yating a few questions, he told her to come to the hospital for her formal internship the next day.

The next day, Zhang Yating got up very early and started getting ready. After all, it was her first day of internship, and she wanted to make a good impression on the hospital leaders. Zhang Yating put on a casual t-shirt, paired with royal blue jeans and yellow canvas shoes. Looking at herself in the mirror, she thought she looked like a student, so she shook her head and changed into a black dress. "Ugh, this is so tacky!" Zhang Yating muttered, starting to rummage through drawers and cabinets again, searching for clothes. After searching for a long time, she still couldn't find a single piece she liked. Sitting on the bed, Zhang Yating pouted at the mountain of clothes piled up in dissatisfaction.

"Yating, come and eat!"

"I'm not eating!" Zhang Yating said stubbornly.

A moment later, the door opened, and a beautiful woman in pajamas walked in. The person was Zhang Yating's older sister, Zhang Yali. Zhang Yali was a few years older than Zhang Yating and worked in the obstetrics and gynecology department of the city hospital. Zhang Yating's successful dental internship was thanks to Zhang Yali's connections.

Zhang Yali looked at the clothes on the bed and asked in confusion, "Yating, what are you doing?" Zhang Yating pouted and said, "This is my first day of internship at the hospital, and I can't find any suitable clothes. It's so frustrating!"

Zhang Yali smiled. She knew that although her younger sister was already twenty-two, she sometimes acted like a child. Although she had said she would graduate soon and become a working adult, she still seemed immature at times.

Zhang Yali patted her sister's shoulder and said, "You're still angry about this? Didn't you say you were an adult? Why are you acting like a child?"

"Oh, sis, I'm not in a rush, am I? This is my first day of internship, I need to make a good impression on my supervisor, right? I want to work at the city hospital after graduation!"

Seeing Zhang Yating's serious expression, Zhang Yali smiled and said, "Come and eat, after you finish eating, come to my room and see if there are any clothes that suit you."

Zhang Yating slapped her forehead and said, "Oh right, how could I forget about you, sis? I'll go look at your clothes first before eating, otherwise I won't feel at ease." After saying that, she ran to Zhang Yali's room in a flash.

Zhang Yali smiled helplessly and followed Zhang Yating to her room.

Zhang Yating threw her sister's clothes all over the bed and started trying on clothes one by one. Finally, Zhang Yating found a set of clothes that she liked, a light gray business suit. After Zhang Yating changed into her business attire, a beautiful white-collar woman appeared before Zhang Yali. Zhang Yali's eyes lit up; the outfit certainly suited her younger sister, but she felt something was missing.

Zhang Yali glanced at the slippers on Zhang Yating's feet and suddenly realized. She found an unopened pair of black stockings in the closet for Zhang Yating to wear, and then contributed a pair of black pointed-toe high heels of her own. Now, Zhang Yating was absolutely radiant, dressed like a mature, sophisticated white-collar woman.

Zhang Yating was also very satisfied with the outfit, constantly striking various poses in front of the mirror. Looking at her, Zhang Yali said, "Yating, this outfit does look good on you. But, I'm not trying to discourage you, but you're going to do an internship at the hospital, and you're dressed like a white-collar worker. It doesn't seem to suit your status, does it?"

Zhang Yating, however, didn't seem to care and said, "Sis, you don't understand. Doesn't dressing like this make me look more formal? It shows that I also value this internship."

Zhang Yali knew that her younger sister usually wouldn't change her mind once she made up her mind, so she let her be.

After they finished eating, they took a taxi to the hospital together.

When they arrived at the hospital lobby, Zhang Yali gave Zhang Yating some detailed instructions, telling her to work hard and ask questions if she didn't understand anything. She had already spoken to the head of the dental department, Li Hu. Zhang Yating said goodbye to her older sister somewhat impatiently and went straight to the dental department on the second floor of the hospital.

When Zhang Yating arrived at the dental office, it was not yet eight in the morning. None of her colleagues had come to work yet, and of course, Director Li Hu, the head of the department, was there either. Only a male doctor in his thirties was on duty.
Zhang Yating didn't know the doctor's name, so she just smiled slightly at him. When the doctor saw Zhang Yating's standard office attire, his mouth dropped open in an "O" shape. It was unclear whether he was surprised or captivated by Zhang Yating's beauty and good temperament.

Zhang Yating was always confident in her looks and figure. Back in school, she was a well-known beauty in her department, and her boyfriend was the school's undisputed prince charming. She always got a 100% head-turning rate on campus. In fact, Zhang Yating had worn a similar outfit during her summer vacation when she was looking for a job interview. When she wore that professional attire back to school, her head-turning rate skyrocketed to 200%—on average, everyone who saw her turned around twice! However, she left that outfit at school and hadn't brought it back, so she was wearing her older sister's. Therefore, Zhang Yating wasn't surprised at all by the male doctor's expression. She confidently sat in a chair, waiting for Director Li to arrive at work.

The male doctor saw Zhang Yating sitting in a chair, her full breasts prominently displayed, her two beautiful legs in black stockings tightly closed and slightly leaning to the side. Her elegance rivaled that of a flight attendant. The doctor stared for a full minute before snapping out of his daze, his face slightly flushed. He quickly sat up straight and focused on the medical record in front of him, though his eyes occasionally darted up to steal glances at Zhang Yating's legs.

After more than ten minutes, the doctor finally stopped agonizing over it, as his dental colleagues had all arrived, and he could go home. Before leaving, he gave Zhang Yating's stockinged legs one last, reluctant glare, swallowed hard, and hurried away.

The dentists were both men and women; five were on duty today, ranging in age from their thirties to their forties. Their reactions to Zhang Yating's attire varied. The two female dentists looked on with envy, while the three male dentists, like the ones who had just been on duty, secretly glanced at Zhang Yating's thighs. Zhang Yating, unfazed, politely greeted her colleagues. After a few pleasantries, everyone returned to their work.
Zhang Yating sat idly in her chair, feeling a little awkward. Fortunately, the head of the dental department, Li Hu, strolled in. The dentists greeted him, and Li Hu smiled and gestured for everyone to continue working, showing no airs of authority. This improved Zhang Yating's impression of Li Hu considerably.

"Head, you're here!" Zhang Yating stood up and greeted Li Hu.

Li Hu, still with his serene, Buddha-like demeanor, greeted her with a beaming smile before even speaking. He said warmly, "Xiao Zhang, you're here quite early!"

Zhang Yating was pleased with the compliment and replied with a smile, "Not at all, not at all, I just arrived!"

Li Hu nodded with a smile, then introduced Zhang Yating to everyone before leading her to the changing room.

Li Hu handed Zhang Yating a white medical gown, saying, "Xiao Zhang, go to the women's changing room next door and change into this white gown. From now on, you'll be interning with me. If you don't understand anything, just ask!"

Zhang Yating gratefully said, "Thank you, Director."

Li Hu patted her shoulder with a smile, gesturing for her to change next door.

Actually, the dental clinic had had many interns before, but Li Hu had never personally supervised any of them. They were usually assigned to a dentist, and Li Hu would simply sign his name on the internship certificate at the end of the internship. This time, on a whim, Li Hu decided to supervise the interns himself. On one hand, Zhang Yali had spoken to him on her behalf; since they worked at the same hospital, Li Hu wanted to give his colleague some face. On the other hand, although Li Hu appeared to be a kind-faced old man, he was actually a complete lecher in mainland China. Even at fifty, his sex drive was still high, and he frequently visited prostitutes in his spare time. Although he didn't dare to be too unrestrained in the hospital, he often took advantage of female patients under the guise of treatment.

Upon seeing Zhang Yating, this beautiful woman, he outwardly remained calm, but inwardly he was drooling with desire, especially seeing her in her professional attire. Director Li longed to lift Zhang Yating's smooth, beautiful legs and kiss them endlessly. However, Director Li ultimately exercised self-control; he didn't want to lose his job. Considering Zhang Yating's two-month internship and his position as the head of the dental department, he figured he was determined to take advantage of this naive young woman.

A short while later, Zhang Yating emerged from the women's changing room, and Li Hu's eyes lit up. The white medical gown was slightly too small for Zhang Yating's 1.68-meter frame, stretching her curves. With each step, the gown's hem would open, revealing her sexy, stockinged legs, making her even more alluring. Director Li, regaining his composure,

smiled knowingly and said, "Hmm, not bad, not bad!"

Zhang Yating didn't understand Director Li's meaning; she thought she looked even more like a doctor in the gown. She confidently and proudly puffed out her chest. Director Li nearly had a nosebleed and quickly led Zhang Yating to the studio.

The studio was a large room with four small single-bed-like adjustable chairs arranged side by side. While Director Li was introducing the work environment to Zhang Yating, several patients arrived one after another, and the colleagues put down their medical records and got busy. At this moment, a woman in her thirties walked in. She was of average appearance, with a round face and squinty eyes, but she was dressed very fashionably. As soon as she entered, she saw Li Hu and called out, "Director Li is here! Are you not busy now? I made an appointment yesterday."
Li Hu smiled and nodded, opening a small door to the side and saying to the woman, "Come in." Then he gestured to Zhang Yating, saying, "Xiao Zhang, you come too!"

The young woman and Zhang Yating followed Li Hu into a small room, which was Director Li's workplace. The room was fairly spacious, with a small desk in one corner, a cabinet for medicines next to it, and a height-adjustable chair in the center.
Li Hu had the young woman lie down in the chair and inquired about her symptoms. It turned out that the young woman had intermittent toothaches. After observation, Li Hu quickly diagnosed it as gingivitis caused by internal heat. The young woman asked Li Hu to sever the nerve in her tooth. Li Hu asked Zhang Yating to assist her. Zhang Yating was very excited; theoretically, she was quite skilled, but she had never practiced in a clinical setting before. This was her first time.

"Yating, give the patient anesthesia first. The medicine is in the cabinet," Li Hu instructed.

Zhang Yating opened the cabinet, only to find it filled with a dazzling array of medicines. She had no idea where the anesthetic was, so she began searching layer by layer. Several minutes passed, and she still couldn't find it. Li Hu was discussing the patient's condition, and Zhang Yating didn't want to interrupt them. Her first attempt had been unsuccessful; she couldn't even find the anesthetic. Zhang Yating felt some pressure.

Li Hu, sensing that Zhang Yating hadn't moved for a while, turned around. He saw Zhang Yating, bent over, her buttocks sticking out, nervously searching for the anesthetic. The hem of Zhang Yating's white coat was sticking up, revealing her rounded buttocks encased in a short skirt. Her stockinged legs were slightly bent, her calves taut and straight—a curve that was difficult to describe. Li Hu felt his penis stirring, but because there were patients nearby, he only glanced at it a few times before reluctantly looking away.

Finally, at the bottom of the cabinet, Zhang Yating found the anesthetic. She deftly opened the syringe and drew the anesthetic into the syringe. Under Li Hu's guidance, Zhang Yating began to inject the patient with the anesthetic. The young woman watched the syringe in Zhang Yating's hand and nervously closed her eyes. Zhang Yating was even more nervous than her; after all, this was her first clinical experience, and the head doctor was watching. What if she messed it up?

Li Hu told Zhang Yating to relax while slowly moving behind her, guiding her hand to correct any incorrect techniques. Zhang Yating became even more nervous, completely unaware that Li Hu's lower body was already pressed against her plump buttocks. With trembling hands, Zhang Yating inserted the needle into the patient's mouth. Taking advantage of this moment, Li Hu gently nudged Zhang Yating's plump buttocks with his erect penis. Zhang Yating was extremely nervous and didn't notice Li Hu's suggestive actions. She began to slowly push the syringe.

Seeing Zhang Yating's focused expression, Li Hu boldly rubbed his penis against her buttocks a few times. Li Hu felt that Zhang Yating's buttocks were soft and elastic, far superior to those of inferior prostitutes. At this point, Zhang Yating had finished receiving the anesthetic injection. Li Hu swiftly took a step back, maintaining a subtle distance from her.

"Hmm, not bad, don't be nervous, take your time," Li Hu encouraged Zhang Yating.

Zhang Yating looked at Li Hu gratefully, completely unaware that Li Hu had already taken advantage of her quite a bit.
Next, Li Hu let Zhang Yating take the lead, while he intentionally or unintentionally caressed her buttocks from behind.

Zhang Yating slowly relaxed. After all, she was a professionally trained surgeon, and once she gained confidence, she proceeded with the minor surgery step by step.

Near the end, Zhang Yating felt something pressing against her buttocks. Actually, she had already felt it earlier, but the surgery wasn't over yet, and Zhang Yating didn't think about it too much. Now that she was relaxed, she finally felt something different.

Li Hu was unaware that Zhang Yating had noticed. He continued to talk to her while rubbing his penis against her buttocks as needed. Li Hu's face was flushed red, the waves of pleasure emanating from his glans intoxicating him, especially since he was molesting Zhang Yating in front of patients; it felt even more exciting.
Zhang Yating, having had sexual experience, already knew that Li Hu was taking liberties with her. She wanted to stop him, but firstly, Li Hu was the head doctor, and she would be interning with him for the next few months; secondly, with patients present, it would be incredibly embarrassing to cry out! Zhang Yating, her face still red, moved slightly forward, trying to escape Li Hu's harassment. Li Hu was startled to realize he'd been exposed, but seeing that Zhang Yating didn't object, he became even more emboldened and continued to molest her.

Zhang Yating frowned; she felt something hot moving between her buttocks through her clothes, like a venomous snake searching for her secret opening. Zhang Yating's heart suddenly pounded. Since her boyfriend had gone to intern at a hospital in the south, she hadn't had sex in a long time.
Zhang Yating was a woman with a very strong sex drive. Before, she and her boyfriend rented an apartment together, and they were inseparable, like newlyweds. Now that her boyfriend was gone, she felt empty inside. Li Hu's lewd behavior suddenly aroused her. A warm current flowed through her lower abdomen, and Zhang Yating's stockinged legs trembled slightly. She stopped what she was doing, feeling an intense desire mixed with the thrill of a secret affair. If Li Hu were to undress her and take his place on the spot, perhaps she wouldn't resist.

At this moment, the young woman on the lift opened her eyes, making indistinct sounds, as if asking if it was over. Zhang Yating was startled and quickly finished. Li Hu also took a step back at the opportune moment. After the young woman left, Zhang Yating's face was flushed. She didn't dare to look Li Hu in the eye. Li Hu pretended well, still smiling as if nothing had happened. In fact, he was very happy. He knew that since Zhang Yating hadn't resisted too much, there was still room for him and Zhang Yating to develop further.

Zhang Yating left the studio under the pretext of going to the restroom. Li Hu watched her back and said thoughtfully, "Two months. I don't believe I can't handle you, little girl!" When

Zhang Yating arrived at the restroom, her heart was still pounding. She suddenly felt a little guilty. A cleaning lady watching her curiously watched Zhang Yating. Zhang Yating quickly slipped into the stall, took off her skirt and stockings, and discovered her underwear was covered in semen. Thinking about Li Hu's earlier advances, Zhang Yating felt her face burning hot, and a primal desire rekindled within her.

She inserted her fingers into her wet vagina, a feeling of fullness washing over her, making her involuntarily shiver. Her hand moved slowly in and out, the pleasure gushing out like a burst dam. She opened her mouth and moaned a few times, but afraid someone would hear, she tried to keep her voice down. Hearing footsteps, Zhang Yating stopped regretfully, took out some tissue to wipe her vulva, dressed, and walked out as if nothing had happened.

Seeing Li Hu's smiling face, Zhang Yating didn't know how to react. Li Hu was, after all, worldly-wise. In the following times, Li Hu simply guided Zhang Yating earnestly, without any unwanted advances. This gradually eased Zhang Yating's anxiety, and her embarrassment towards Li Hu lessened considerably.

That evening, because her sister Zhang Yali had to work overtime, Zhang Yating ate something outside and hurriedly returned to her sister's house. Three years ago, Zhang Yali was unable to conceive, and her husband, under pressure from his parents, submitted a divorce petition to her. Zhang Yali signed her name with a bitter smile, not wanting to put her husband in a difficult position. Her husband, feeling guilty, left the property to her. Zhang Yating usually stayed at her sister Zhang Yali's house during holidays, and this internship was no exception.

Returning to her sister's house, Zhang Yating felt extremely troubled. She was angry at Li Hu's advances, but the strange, stimulating pleasure also made her heart flutter.

Zhang Yating drank a glass of water and, feeling utterly bored, went to her sister Zhang Yali's room, turned on the computer, and started surfing the internet. She had just logged into QQ when a profile picture flashed. It was Gao Feng, Zhang Yating's boyfriend. He had gone to a hospital in the south for an internship some time earlier, and the two hadn't been in touch for a long time.

"Yating, are you there?"

"Yeah, I'm here. Feng, long time no see. How are you?"

"I'm alright. How are you?"

"I'm fine too. Today is my first day at the hospital!"

"Oh, well... Yating... um..." Gao Feng seemed hesitant to speak.

Ya-ting found Gao Feng's hesitant manner odd, but she immediately realized he had something to say to her. Although they used to be inseparable, Gao Feng had been away in the south for a long time and hadn't contacted her. She felt uneasy, sensing that Gao Feng was distant and aloof.

"Is something wrong, Feng?"

"Um, Ya-ting, let's break up!"

"Why?" Although Zhang Ya-ting was somewhat prepared, the sudden tragedy still made her say the words women most often say!

"I'm going to stay in the south to work from now on. My family introduced me to a girlfriend. She likes me a lot. Most importantly, her father is the president of this hospital..."

"..."

"I'm sorry, Yating, forget about me!"

When the other person's QQ avatar turned gray, Zhang Yating was still staring blankly at the screen. Her mind was filled with intermittently happy scenes of her and Gao Feng when they were in school. Unfortunately, those beautiful memories had vanished completely like a pile of weeds in Gao Feng's ruthless words. Two hot tears streamed down Zhang Yating's beautiful eyes. But Zhang Yating was a strong girl. After an unknown amount of time, she awoke from her reverie. She wiped the faint moisture from her eyes and gave a bitter smile. Gao Feng was a thing of the past, because she knew that even if Gao Feng was outstanding, he wasn't worth her heartache. Zhang Yating

kicked off her high heels and lay on the bed. As soon as she closed her eyes, memories flooded back like a torrent. Those once beautiful scenes now seemed as ferocious and terrifying as wild beasts. She wanted to fall asleep as soon as possible; if she fell asleep, she wouldn't think about anything, and she wouldn't be in pain anymore. However, she tossed and turned for a long time without being able to fall asleep.
Zhang Yating opened the drawer and took out two sleeping pills. She knew her older sister, Zhang Yali, had also suffered from insomnia since her divorce, and there were sleeping pills in the bedside table. With a sip of cold water, Zhang Yating drank the sleeping pills and gradually fell asleep.

Shortly after Zhang Yating fell asleep, Zhang Yali returned home. The obstetrics and gynecology department was very busy that day, and Zhang Yali had worked overtime until after 11 p.m. She had endured her exhaustion to settle the last patient. Back home, Zhang Yali took a comfortable hot shower and went to her room naked. The room light was on, and the screen saver on the computer screen was still happily flashing beautiful pictures. Her younger sister, Zhang Yating, was sleeping soundly on the bed, wearing stockings and a shirt. Zhang Yali shook her head. Her younger sister was still like a child, asleep without even taking off her clothes.

Zhang Yali lovingly covered her sister with a blanket, then turned off the computer and lights, and crawled into bed herself.
It had been many years since she had slept in the same bed with her sister. When her sister was little, she always insisted on sleeping with her, but as she grew older, they began to sleep separately. After all these years, lying next to her sister felt incredibly warm and comforting.

Zhang Yating, still asleep, turned over, draping an arm over Zhang Yali's neck, her head buried tightly against Zhang Yali's chest. Zhang Yali felt a strange unease rising within her. Since her divorce, she had never been so intimate with anyone. Even though it was her younger sister beside her, Zhang Yali's heart still skipped a beat.

Zhang Yating's nose was pressed against Zhang Yali's nipple, the breaths from her nostrils gently teasing it. Zhang Yali's body gradually reacted; her face flushed, and her nipples hardened. Zhang Yali's emotions were complex, a mixture of excitement, madness, and guilt. She nudged Zhang Yating with her hand, but Zhang Yating, still asleep, tightly embraced her neck, muttering in her sleep, her thin lips pressing against Zhang Yali's erect nipple.

Zhang Yating had a strange dream; she dreamt she was back in her childhood, her mother holding her in her arms, suckling sweet milk from her mother's nipple…

Zhang Yating's suckling motions were like a child's, sending waves of pleasure from Zhang Yali's nipple throughout her body. Zhang Yali's body grew hot, her breathing becoming heavy. For three years, her heightened female urges had tormented her late at night. Whenever she deeply craved sexual pleasure, she would masturbate to orgasm and then take two tranquilizers to fall into a deep sleep. Now, her younger sister was sucking on her nipple, a kind of incestuous pleasure she had never experienced before. She pushed her breast towards her sister's mouth, her trembling hand reaching for her own vulva. Her plump,
abalone-like vulva hadn't been touched by a man in three years. Her fingers skillfully probed the hot, throbbing opening, and Zhang Yali let out a suppressed moan. At that moment, Zhang Yating stopped sucking, and Zhang Yali felt a pang of disappointment. With her other hand, she tremblingly unbuttoned Zhang Yating's shirt and bra. Zhang Yating's full breasts bounced out like little rabbits. Zhang Yali's heart pounded wildly. Her hand was already covering her sister's breasts. Although Zhang Yating's breasts weren't as full as hers, their smooth and elastic skin was even better. Zhang Yali was extremely nervous, just like the excitement and eagerness she felt when she first consummated her marriage with her husband.

Her vagina was already fully wet, and her right middle finger moved in and out happily. Zhang Yali stuck out her small tongue and quickly teased Zhang Yating's nipples with the tip of her tongue. Soon, Zhang Yating's small nipples seemed to grow larger and harder. Suddenly, Zhang Yating let out a soft moan. Zhang Yali quickly stopped what she was doing, her fingers swiftly withdrawing from her vagina, oblivious to the sticky fluids that smeared onto the blanket. Zhang Yating had only made a soft moan and hadn't woken up. Hearing her sister's heavy breathing, Zhang Yali finally relaxed. She eagerly inserted her right middle finger into her own vagina, her mouth also taking Zhang Yating's nipple into her mouth. The excitement made her heart feel like it was breaking. She continued to exert force with her right middle finger, and finally, with a comfortable moan, Zhang Yating reached orgasm, her legs tightly clamping her fingers...

The next day, Zhang Yating didn't wake up until after eight o'clock in the morning. She patted her slightly aching head and looked at the clock on the wall, then panicked. It seemed she was going to be late today. She woke her sleeping sister, and the two sisters hurriedly washed up and ate without eating before taking a taxi to the hospital. During this time, Zhang Yali secretly observed her sister and, finding nothing amiss, was relieved.

Zhang Yating arrived at the department around 9:00 AM. Many patients had arrived, and several others were waiting. Zhang Yating found Li Hu in his personal office and quickly explained her lateness. Li Hu, realizing Zhang Yating hadn't arrived, felt a pang of anxiety, worried that his inappropriate behavior towards her the previous day would become a scandal. Thankfully, Zhang Yating was there, and judging from her expression, everything seemed alright, which put Li Hu at ease. Zhang Yating thought Li Hu would criticize her, as being late on the second day of her internship wasn't a good thing. Unfortunately, to everyone's surprise, Li Hu remained all smiles and told Zhang Yating that she could call him if anything came up, and that taking a day off was no problem. Zhang Yating was very grateful. She was already upset about her breakup yesterday, and today, even though she was late, Director Li hadn't given her a hard time, which made her feel much better about him.

These past few days at work, Zhang Yating had been somewhat distracted, almost causing medical accidents several times while treating patients. If it weren't for Li Hu's timely reminders, Zhang Yating didn't think her internship could have continued smoothly. Li Hu had also spoken to Zhang Yating several times. Since Zhang Yating was preoccupied, Li Hu used a few tricks to get the truth about her breakup. Li Hu comforted Zhang Yating like a loving father, even offering her a few days off to clear her head and adjust her mindset before returning to work. Zhang Yating was grateful but still insisted on going to and from work every day. Li Hu could see that Zhang Yating's mood was gradually improving; her attitude towards him was both grateful and affectionate. When he occasionally made advances towards her, Zhang Yating seemed used to it and complied.
Zhang Yali had also noticed her sister's troubles these past few days. During their breaks, the two sisters had a heart-to-heart talk. Zhang Yating, of course, didn't hide it from her sister and told her about her breakup with Gao Feng. Zhang Yali initially wanted to comfort her sister, but thinking of her own painful divorce, she cried first. The two sisters embraced and wept bitterly, feeling much better afterward.

Before she knew it, Zhang Yating had been interning at the hospital for over ten days. With Li Hu's help, she had learned a lot. Li Hu often praised her, saying that she could work at the hospital after graduation, and he would help her find a job. In just over ten days, Zhang Yating's feelings for Li Hu had reached their peak. Of course, Li Hu would still sometimes take advantage of her, but Zhang Yating had become used to it. Compared to Li Hu's kindness to her, these little things were nothing. Later, she gradually got used to Li Hu's flirtatious behavior, and the thrill made her unable to extricate herself from it.

Since Zhang Yali and her younger sister Zhang Yating started sleeping in the same bed, Zhang Yali gradually developed a liking for her sister's body. She experienced intense pleasure while masturbating by caressing her sister's breasts. For the past few days, almost every night Zhang Yali would give her sister a glass of juice laced with sleeping pills, and after her sister fell asleep, she would caress her body and masturbate. Zhang Yali's actions were no longer limited to caressing her sister's breasts; her sister's genitals had also been kissed by her small tongue.

Zhang Yating had also been feeling unwell these past few days. After drinking the juice her sister gave her at night, she would fall asleep quickly, but often woke up with a headache the next morning. That night, she secretly poured out the juice Zhang Yali had given her and lay in bed pretending to be asleep.

Just as Zhang Yating was about to fall asleep, a familiar figure walked in.

"Yating, Yating..." It was the voice of the older sister, Zhang Yali. Zhang Yating deliberately remained silent.

Seeing that her younger sister Zhang Yating didn't respond, Zhang Yali boldly turned on the light. She saw her younger sister Zhang Yating lying on the bed wearing only a small pair of white underwear, the blanket lying on the floor. Zhang Yali tiptoed onto the bed, looking at her sister's curvaceous figure, her eyes seemingly burning with desire. She leaned down naked, sticking out her small, scarlet tongue, the tip of which lightly brushed against Zhang Yating's nipple. Zhang Yating felt her forehead burning, and her nipples changed color. She wanted to open her eyes and interrupt her sister, but she held back. Since their parents' death, she had lived with her sister. Seeing the crow's feet around her eyes, a result of the divorce, saddened her greatly. She had also witnessed her sister masturbating more than once, all of which she kept deeply buried in her heart. She understood her sister's suffering.

Zhang Yali was unaware that Zhang Yating was pretending to be asleep. She continued kissing her sister's body as usual, first her breasts, then her lower abdomen, and finally her inner thighs. Zhang Yating's body trembled slightly; her inner desire suddenly erupted. Finally, she could no longer restrain herself and shakily opened her eyes to look at her sister, Zhang Yali. Zhang Yali's tongue was still wandering between Zhang Yating's thighs, and one hand was also grasping and kneading her own breast. Suddenly, she sensed something was wrong. Looking up, she saw her younger sister staring at her with wide eyes. Zhang Yali froze, never expecting her sister to wake up while she was playing with her body. She stammered, "Yating... I..." but couldn't say anything.

Zhang Yating hugged her sister's neck and whispered in Zhang Yali's ear, "Sister, don't say anything." Then, she actually stuck out her small tongue and began licking Zhang Yali's nipple. Zhang Yali seemed to understand something; her eyes welled up with tears. Before she could say anything to express her gratitude, the pleasure from her nipple ignited a burning desire within her. In return, Zhang Yali grabbed Zhang Yating's breasts with both hands, stroking them towards the nipples as if milking a cow. Zhang Yating felt extremely excited; this incestuous pleasure deeply impacted her heart. She sucked on her sister Zhang Yali's breast, occasionally letting out a soft moan.
Zhang Yali's fingers slipped between Zhang Yating's legs, revealing the wetness beneath the thick pubic hair. Her fingers easily found Zhang Yating's clitoris, her fingertips gently rubbing the semi-circular ball, or she would extend her middle finger and gently insert it into Zhang Yating's vagina, smearing the sweet nectar on the clitoris in the moist space. The smooth fingertips, lubricated by the lubrication, moved even faster on Zhang Yating's clitoris. Zhang Yating had already released her sister Zhang Yali's nipple, and she could no longer suppress her excited physiological reaction, wantonly moaning lewdly.
Zhang Yali inserted two fingers into Zhang Yating's wet and aroused vagina. After some exploration, the prominent G-spot became her target. After several attacks, Zhang Yating was completely exhausted and reached orgasm with a high-pitched moan. Her pink labia gripped Zhang Yali's fingers tightly, and Zhang Yating's arms clung tightly to her sister's neck, refusing to let go...

Zhang Yali gently patted her sister's smooth, satin-like back. Zhang Yating looked up and saw Zhang Yali's unsatisfied gaze; she could tell her sister wasn't yet satisfied. So she extended her small, cute tongue and licked her sister's nipple. Zhang Yali lay helplessly on the bed, waves of guilt-ridden pleasure washing over her. Zhang Yating's tongue licked from her sister's breasts all the way down to her thighs. Faced with her sister's wet, plump vulva, she didn't know what to do. She had experience giving oral sex to men, but she had never tried giving oral sex

to a woman before. Zhang Yali's pleasure suddenly stopped. Seeing her sister's embarrassed expression, she, burning with desire, rolled over and boldly straddled her sister's head. Her two thick labia covered her sister's small mouth, and Zhang Yating deeply sucked on her sister's labia. A mature and ambiguous feminine scent wafted into her nostrils, and she felt a hazy sensation. Zhang Yali touched her breasts and repeatedly thrust her genitals. Her clitoris was swollen and engorged. Zhang Yating occasionally stuck out her tongue to stimulate her clitoris. Finally, Zhang Yali reached orgasm in a series of rapid twisting movements. Sticky vaginal fluid clung to Zhang Yating's mouth and nose...

Zhang Yating and her sister fell asleep in each other's arms. Zhang Yali realized that the adult product website she usually only browsed but never bought from was about to receive a sale.

Just as Zhang Yali received the vibrator she had ordered online, disaster struck. It turned out that Zhang Yali had been working late that night. While suturing a new mother's genitals, she fell asleep and didn't sew properly. The woman's genitals hadn't healed well for several days, and it wasn't until the stitches were removed that it was noticed, requiring re-suturing. This angered the woman's family, who caused a scene at the hospital. To prevent the situation from escalating, the hospital leadership had already compensated the woman with a considerable sum. Zhang Yali, bearing primary responsibility for the incident, was suspended from her job and placed at home. Zhang Yating was very worried. Her sister was already divorced, and if she lost her job as well, things would be unbearable. Later, she learned that Li Hu's cousin was the vice president of the hospital's obstetrics and gynecology department. She figured that if Li Hu intervened, he could save Zhang Yali's life. Zhang Yating decided to ask Li Hu for help.

Li Hu had been riding high these past few days. He felt he had almost won over the beautiful intern, Zhang Yating. At least on the surface, Zhang Yating seemed to have been influenced by him. The fact that she hadn't objected to his occasional lewd advances was the best proof. He needed to find the right opportunity to make his move.

That day, Li Hu strolled leisurely into the department and saw Zhang Yating looking anxious in the corridor.
"What's wrong, Xiao Zhang?" Li Hu asked kindly.

"My sister's in trouble..." Zhang Yating recounted the events to Li Hu.

Hearing that Zhang Yating needed his help, Li Hu was secretly delighted. He frowned, pretending to think for a moment, and said, "This isn't easy. Don't worry, I'll go find my cousin." Li Hu turned and left.
After quite a while, Li Hu returned, his forehead covered in sweat. Actually, he had deliberately run a short distance so that Zhang Yating would see it. Zhang Yating asked anxiously, "How did it go, Director Li? What did the hospital director say?"
Li Hu grinned, looking pessimistic, and said, "This matter has had a very bad impact. The hospital leaders have all demanded severe punishment. However, I went to great lengths to beg my cousin. My cousin will find a way. If it really doesn't work, I'll go again this afternoon. Don't worry too much!" In fact, this matter could be a big or small issue. The patient's family had already been appeased. The hospital sending Zhang Yating home to reflect was just a small punishment. In a few days, once things had calmed down, she would be allowed to return to work. Li Hu had overheard the internal discussions among the leaders and was deliberately trying to scare Zhang Yating, hoping to take all the credit for the delay.
Zhang Yating was indeed fooled. Although she was uneasy, she kept thanking Li Hu.
In the afternoon, Director Li pretended to go to the dean's office again, but in reality, he just chatted with his cousin. When he returned, he was all high and mighty, arrogantly telling the anxious Zhang Yali, "It's basically all settled. Your sister will be back at work in a few days." Zhang Yating, both admiring and grateful to Li Hu, said, "Director Li, thank you. If there's anything we sisters can do for you in the future, just let us know!" Li Hu smiled and said, "Look at you, it's not that serious. Oh, I actually do have something to ask you. Look, I need to get my teeth cleaned. You've been at our clinic for so long, but you haven't cleaned a patient's teeth yet, have you? You can't neglect your basic skills. Perfect, I, Old Li, will be your guinea pig first."

Zhang Yating was amused by Li Hu's words and playfully said, "Yes, sir."

At this time, there were no patients in the dental clinic. All the colleagues had gone to the office to write medical records and chat, leaving the spacious room feeling empty. Li Hu opened his small workspace, let Zhang Yating in, and then secretly locked the door from the inside.

Zhang Yating was looking for dental cleaning supplies and solution, completely unaware of Li Hu's actions. Li Hu, reclining in the adjustable chair, said, "Xiao Zhang, take your time, don't be nervous." Zhang Yating smiled at Li Hu while busy with her work; her beautiful face paired with an angelic smile almost stunned Li Hu.

Zhang Yating walked to Li Hu's side with the solution, and Li Hu opened his mouth, revealing a mouthful of white teeth.

"The director's teeth are pretty clean, aren't they?" Zhang Yating thought to herself, but she didn't think much of it.
Zhang Yating leaned forward, about to start working, when suddenly she felt something hard pressing against her genitals. She looked down and saw that Li Hu's elbow was intentionally or unintentionally leaning outwards, resting right between her legs. Zhang Yating was still wearing a short skirt and black high heels, but her stockings were now flesh-colored.
Zhang Yating blushed slightly and felt flustered. Embarrassed, she moved aside and continued working. Zhang Yating finally calmed down and began working, slightly crouching down. At that moment, she felt Li Hu's arm rest on her thigh, but she didn't pay much attention. The arm didn't stop there; a large hand lightly brushed across the inside of Zhang Yating's thigh, making her leg feel numb, tingly, and itchy.
Seeing Zhang Yating's lack of reaction, Li Hu grew bolder. He placed his entire palm on Zhang Yating's thigh; her stockinged thigh was cool and slippery, making Li Hu feel incredibly uncomfortable, and his penis gradually became aroused. Zhang Yating felt the hot palm pressed against her thigh, and although she wanted to pull away, she had no strength. Li Hu took advantage of the situation, gently caressing Zhang Yating's thigh, his palm slowly moving towards her groin. Zhang Yating felt a strange pleasure spreading from her groin throughout her body. She tried her best to suppress the moans that wanted to escape her lips, her legs slightly parted, as if tacitly agreeing to Li Hu's actions.
Suddenly, Zhang Yating cried out and took a step back. Li Hu's fingers had finally touched her clitoris. Even through her clothes, the sensitive girl's body clearly couldn't withstand such stimulation. Li Hu quickly reached out and scratched his face to cover it up, though both of them knew what was going on. Zhang Yating blushed and stood there stunned for a few seconds before finally stepping forward to clean Li Hu's teeth. Li Hu's large hand moved again, this time more carefully, his palm hovering over Zhang Yating's thigh. While cleaning Li Hu's teeth, Zhang Yating endured his harassment, feeling a strange stimulation as her body slowly warmed up.

Li Hu had already sensed the changes in Zhang Yating's body. He steeled himself and placed his large hand on her buttocks. Since Zhang Yating was wearing a short skirt, Li Hu easily slipped his hand under the skirt, caressing her plump buttocks through her stockings. Zhang Yating froze, feeling Li Hu's hot hand roaming over her cleft, sometimes pinching her buttocks, sometimes moving to her vulva. Zhang Yating's mouth slightly parted; Li Hu's hand offered a small comfort to her thirsty heart.

A burning desire instantly filled her mind; she only wanted Li Hu to play with her body to his heart's content. Seeing Zhang Yating's submissive demeanor, Li Hu was overjoyed. He tightened his grip, his experienced hand relentlessly kneading Zhang Yating's clitoris. Soon, Zhang Yating's thighs began to tremble, as if vaginal fluid was flowing from her vagina, soaking her panties and stockings.

Zhang Yating was no longer able to work. She squatted with her legs spread apart, Li Hu's large hand, like a cruise missile, pressing against her between them. With each kneading motion, low moans escaped Zhang Yating's lips.

Li Hu was already burning with desire, but his rich sexual experience kept him somewhat sane. He wanted to savor Zhang Yating's body slowly, and he knew that if he took advantage of her now, she might regret it. He understood the principle of letting things unfold naturally; he would use every means to make Zhang Yating willingly offer her precious body.
Suddenly, Li Hu grabbed Zhang Yating's arm and pulled her into his embrace. Caught off guard, Zhang Yating fell into his arms. Her left foot was on the ground, her right leg bent and supporting her on the adjustable chair. Her black high heels slipped off her heels and dangled from her toes, swaying back and forth, making her look even more sexy and wild. Zhang Yating opened her eyes and found herself facing Li Hu's wrinkled face. Li Hu opened his mouth and extended his large tongue towards her small mouth. Zhang Yating immediately closed her eyes.

Zhang Yating felt something soft and wet gently teasing her lips. That thing seemed unsatisfied and desperately pushed into her mouth, searching for the tip of her tongue, the coating of her tongue, and those sensitive spots in her mouth. She shivered as if she had been electrocuted, and the hairs on her body seemed to stand on end, goosebumps covering her skin. This reminded her of when she was a child, playing with the puppy that her sister had, and the puppy's tongue licked the corner of her mouth. Her reaction then was the same as now; her heart pounded wildly, and she felt all her strength drain away. Unexpectedly, after so many years, Director Li made her experience that heart-wrenching feeling again.

Li Hu used all his skills, sometimes licking Zhang Yating's lips with his tongue, sometimes delving deep into her mouth to find that soft spot. Finally, he lured Zhang Yating's small tongue out, and Li Hu's lips immediately caught it and put it into his mouth. Zhang Yating's tongue was as soft and juicy as delicious oyster meat, and Li Hu enjoyed it immensely. Zhang Yating just opened her mouth and let Li Hu take advantage of her. Before long, her mouth was full of saliva, and the sticky saliva was sucked into Li Hu's mouth and swallowed like honey.

Li Hu's hands were not idle either. He reached behind Zhang Yating's back and unhooked her bra. His fingers slowly slid down Zhang Yating's spine until they reached Zhang Yating's buttocks. Zhang Yating felt an itch in her back, a tingling numbness in her tailbone. Her body trembled involuntarily. The tingling, numbness, and itching sensation didn't disappear instantly but instead permeated her entire being. The desire within her seemed to be doused with gasoline, igniting completely.

Zhang Yating's mind went blank; primal desire made her lose herself. She went wild, and with a thud, her high heels fell to the ground. Zhang Yating's tongue was no longer passively allowed to be sucked by Li Hu. She abruptly withdrew her tongue, her thin lips capturing Li Hu's tongue and taking it into her mouth. Li Hu felt his tongue being frantically sucked by Zhang Yating, and he began to fight back. Their tongues darted back and forth, intertwining like two venomous snakes of the opposite sex. Their saliva mingled, indistinguishable from one another, trickling down their cheeks and chests.

After a few minutes of this tug-of-war, both were panting heavily; kissing was indeed tiring.
Li Hu lay on the reclining chair, breathing heavily, while Zhang Yating squatted beside him, also panting. Her face was flushed with excitement, as if painted with rouge. Li Hu took Zhang Yating's right hand and placed it between his legs; his penis was already erect, pressing against his crotch like a small tent. Zhang Yating obediently kneaded Li Hu's penis. Although Li Hu was over fifty years old, his penis was surprisingly large. Zhang Yating touched Li Hu's penis and compared it with Gao Feng's, finding that Li Hu's was slightly better.

Li Hu reached out his right hand and unbuttoned Zhang Yating's white coat. Underneath, she wore only a black camisole with a low neckline, revealing a hint of cleavage. Li Hu's lust was aroused, and his penis swelled again. Li Hu used his thumb and forefinger to flick and pull downwards, a movement as graceful as Kasyapa's flower-offering gesture. Since he had already unhooked Zhang Yating's bra, the black camisole and bra were pulled down together.

Zhang Yating's breasts trembled and were revealed. Her breasts were semi-circular, like bowls turned upside down on her chest. Her fair skin was smooth and oily, and pink nipples, like small peanuts, adorned her breasts. Her areolas were small and light in color, clearly untouched by previous handling. Li Hu, as if he had found a treasure, used his legendary "flower-plucking fingers" to manipulate Zhang Yating's breasts in various shapes. Her pink nipples, unable to withstand the teasing of this master of lust, quickly became engorged and swollen, turning a dark red.

Zhang Yating's sensitive body trembled again. She moaned and desperately kneaded Li Hu's penis. A warm current seemed to flow from her abdomen throughout her body. She felt something flowing from her vagina; if it weren't for her panties and stockings, the liquid would have dripped onto the floor.

Li Hu had Zhang Yating climb onto the lift chair with her head facing his legs. Zhang Yating carefully spread her legs and straddled Li Hu's head, her upper body leaning forward so that her head was directly in front of the small tent in Li Hu's crotch. The position was incredibly lewd. Li Hu's head was positioned directly between Zhang Yating's legs. Underneath her flesh-colored stockings was a white pair of panties, soaked with her own fluids, making them appear almost transparent. Li Hu smelled the distinctive scent of a woman's genitals
. She pulled down her stockings and panties, revealing her tender pink labia, glistening with vaginal fluid beneath her thick pubic hair. Li Hu embraced Zhang Yating's slender waist and extended his thick tongue, savoring the taste of her genitals. Zhang Yating felt an unbearable tingling and itching sensation in her vagina, a surge of intense pleasure washing over her. She frantically unbuckled Li Hu's belt and reached into his pants, pulling out his magnificent penis.

Li Hu's penis wasn't very long, but its diameter was considerable. The engorged foreskin had already retracted, revealing the egg-shaped glans, from which a trickle of precum was still flowing. Zhang Yating instinctively smelled a pungent odor of urine, which only fueled her excitement. She thrust her hips in rhythm with Li Hu's thrusts into her vagina, opening her mouth to envelop the large, dark red glans. Zhang Yating's mouth was slowly stuffed full, and she moved it up and down like a child seeing their favorite popsicle.

Li Hu felt his penis being held in a warm, moist little mouth, the small tongue occasionally touching his glans. Li Hu's waist thrust, wishing he could burst Zhang Yating's little mouth open. Zhang Yating didn't hesitate, mustering her courage to swallow Li Hu's entire penis. A wave of nausea washed over her, and Zhang Yating spat out Li Hu's penis, then spat it back into her mouth. Stomach acid mixed with saliva flowed onto Li Hu's testicles and pubic hair.

Li Hu's mouth was full of the vaginal fluid secreted by Zhang Yating, and he felt Zhang Yating's body spasming uncontrollably, as if she was about to climax. Li Hu stopped his movements at the right moment. Li Hu suddenly asked, "Ya Ting, do you want my big cock?"

Zhang Ya Ting, though her back was to Li Hu, was still blushing with embarrassment. However, Li Hu's lewd words excited her greatly. Besides, Li Hu had stopped just as she was about to climax, and she was now burning with desire. She might have let any man have his way with her, but she was too embarrassed to answer such a blatant question.
"Want a cock?" Li Hu asked, pressing his finger against Zhang Ya Ting's vulva.

Zhang Ya Ting trembled and whispered, "Yes."

"Want a cock? Be more specific?" Li Hu said deliberately.

"Want a cock to fuck my vulva..." Zhang Ya Ting said obediently. Saying this, she even felt excited.

"Suck my cock a few more times," Li Hu commanded.

Zhang Yating obediently opened her mouth and took Li Hu's cock in, stroking it a few times.

Li Hu was very satisfied and said, "Stick out your tongue and lick my glans, oh...yes...lick my testicles a few more times...um...okay..."

Zhang Yating was very obedient now, doing whatever Li Hu told her to do. Li Hu was very proud, having such a beautiful college student sucking his cock under his command made him feel both mentally and physically satisfied.
"Get down, stick your ass out, I'm going to fuck your cunt!" Li Hu commanded.

Zhang Yating immediately rolled over and got off the ground. Although her legs felt a little numb, she still obediently bent over, sticking out her sexy little ass and resting her arms on the lift chair.

Li Hu also flipped down from the adjustable chair and saw the alluring round buttocks waiting for him. Li Hu took two steps forward and placed the head of his penis against Zhang Yating's vagina, moving it up and down but refusing to go in. Zhang Yating felt something warm pressing against her entrance, adjusted her buttocks to receive it, but little did she know that the thing was like a slippery eel, refusing to enter. Zhang Yating twisted her waist, letting out what seemed like pleading moans, when suddenly she cried out, and Li Hu's penis, like a red-hot torch, plunged into her vagina.

Zhang Yating felt her body lighten as if she were ascending to heaven, the overwhelming pleasure filling her entire body, her lonely heart seemingly finding immense satisfaction. This was much more comfortable than masturbating with her sister. Zhang Yating writhed her hips, letting out moans that were both joyful and somewhat painful. Li Hu felt his penis enter a narrow, moist, and elastic place; the hot depths, the smooth, tender flesh around his glans like an elastic band, were simply indescribable.

Li Hu thrust vigorously, each time plunging his entire penis into Zhang Yating's vagina. The panting and moans mingled together, sounding so hot and wanton.

After dozens of thrusts, Zhang Yating reached orgasm; after all, their foreplay had been too long. Zhang Yating's waist slumped down, her legs trembling uncontrollably. Li Hu knew Zhang Yating was getting tired, so he slowed down and changed to nine shallow thrusts followed by one deep one. His glans gently rubbed against the tip of Zhang Yating's vagina, and after nine thrusts, he suddenly reached her G-spot. Zhang Yating was so excited that she couldn't open her eyes. She half-closed her phoenix eyes and continued to enjoy this blissful moment.

With a series of rapid "slap slap slap" sounds, Li Hu began his final thrusts. Zhang Yating knew Li Hu was close to climax. She mustered all her strength and squeezed Li Hu's penis tightly. Li Hu grabbed Zhang Yating's breasts and thrust his hips powerfully, finally ejaculating deep into Zhang Yating's vagina with a howl that was somewhere between a human and a beast. Zhang Yating cried out and reached climax again...
After work, Zhang Yating returned to her sister's place. She greeted her sister, Zhang Yali, and went into the bathroom to take a shower, afraid that her sister would see the marks on her body. While showering, Zhang Yating recalled her crazy encounter with Li Hu, and her body even became aroused again. However, she quickly stopped her thoughts. If Li Hu hadn't been old and suffering from kidney failure, she couldn't imagine whether she could have gone home today. However, she truly couldn't forget that blissful moment.

Zhang Yali looked dejected, so Zhang Yating quickly told her sister what Li Hu had told her, which put Zhang Yali at ease.

A week later, just as Li Hu had said, Zhang Yali was notified by the hospital leadership to return to work without even a reprimand. This made both Zhang Yating and her sister extremely grateful to Li Hu. During this time, Zhang Yating practically became Li Hu's sex slave, doing whatever he commanded, no matter how shameful. While working, it was common for Li Hu to take advantage of her. Sometimes, Li Hu would even have Zhang Yating insert a vibrator into her vagina to treat patients, while Li Hu would casually turn the remote on and off repeatedly. Zhang Yating had to concentrate on treating patients while also dealing with Li Hu's sudden attacks, which was extremely embarrassing.
Sometimes, Li Hu would sit behind his desk in his studio, while Zhang Yating knelt under the desk to give him oral sex. Even when colleagues or patients walked in, Zhang Yating would continue. Some colleagues even wondered if their eyes were playing tricks on them; they clearly saw the director and Zhang Yating go in together, but when they went in, they only saw the director, and Zhang Yating had vanished into thin air! Of course, having sex with Zhang Yating once a day was essential, and Director Li enjoyed it immensely. Their lovemaking traces were left on the adjustable chair, the desk, and even the corners of the walls. Zhang Yating also enjoyed it; she became more open and bolder than before, feeling like something was missing if she didn't have sex every day.

Before she knew it, Zhang Yating's internship was over, and she was facing graduation. Li Hu, through some unknown means, managed to get Zhang Yating a job in his department. After a few more months, she would become a full-fledged doctor.
Zhang Yali was very grateful to Li Hu for everything he had done for her sister. She was able to work at the hospital thanks to Li Hu. She had long wanted to treat him to a meal, but had never had the time. Now that her sister had a job, Zhang Yali told Li Hu that she had decided to treat him. Li Hu was very easygoing. He excused himself, saying he didn't like eating out and would be honored if Zhang Yali and her sister could cook him a meal. Zhang Yali readily agreed.

After work, the two sisters busied themselves preparing a large table of food, while Li Hu brought a bottle of baijiu and a bottle of red wine. The three of them ate, drank, and chatted happily. They ate until after 9 PM. Li Hu, unable to hold his liquor, soon passed out drunk. Of course, no one noticed he was feigning intoxication; as the saying goes, his true intention wasn't in the wine.
Seeing that it was already 10 PM, the two sisters were too embarrassed to wake Li Hu. They covered him, who was passed out on the sofa, with a blanket and went back to their room to sleep.

At 11 PM, Zhang Yali couldn't sleep and wanted to engage in lesbian activities with her sister, while Zhang Yating, thinking of having a secret encounter with Li Hu while her sister slept, was also filled with lust. The two hid on a bed, and Zhang Yali took out a vibrator. They began to massage each other's bodies. Just as they were enjoying themselves, the door suddenly opened, and a naked man appeared before the sisters. The room was only lit by a bedside lamp, making the atmosphere even more ambiguous. In the soft light, Zhang Yali recognized the man as Li Hu.

Actually, Li Hu was pretending to be drunk. He wanted to wait until Zhang Yali fell asleep and then secretly have sex with Zhang Yating. Who knew he would make such an even bigger discovery? Zhang Yali was completely stunned when she saw Li Hu's naked body, especially his engorged penis. She suddenly had an urge to kiss it, forgetting that the vibrator was still buzzing inside her. Li Hu almost drooled when he saw Zhang Yali's naked body. They had seen and touched Zhang Yating's body every day, and after so long, they were almost tired of the novelty. But this was the first time he had seen Zhang Yali's body.

A few seconds later, Zhang Yali finally reacted. She gasped and quickly covered herself and her sister with the blankets, only then realizing the vibrator was still inserted. She gently pulled it out, and facing Li Hu, she was so ashamed she could barely lift her head.
Zhang Yali said with her head down, "You go out first!"

But Li Hu shamelessly said, "I'm not going out." He then plopped down on the edge of the bed, his penis trembling slightly. Zhang Yali felt a flutter in her heart, while Zhang Yating felt a strange intimacy with that ugly thing.
"What do you want?" Zhang Yali was straightforward; she didn't want to beat around the bush.

"I don't want anything!" Li Hu was surprisingly adept at playing hard to get.

Zhang Yali was furious. Her past divorce had caused her immense pain, and she had finally found solace in her younger sister. She knew this wasn't a long-term solution, but now the truth was out. She didn't care if Li Hu made a scene, but how could her sister face anyone? It was all her fault! Zhang Yali roared, "I'm a shameless woman! Now you know! Go ahead and shout it everywhere! I'll kill myself! Tell me, what do you want?" Tears streamed down Zhang Yali's face; she was breaking down. Zhang Yating, seeing her sister like this, was terrified and didn't know what to do, only hugging her sister and sobbing softly.

Li Hu said calmly, "Ya Li, calm down. I told you, I really don't want to do anything. Actually, Ya Ting and I have already... well, you know. Now you know why I'm helping you and Ya Ting so much, right?"
Zhang Ya Li was stunned by Li Hu's words. She looked at Zhang Ya Ting in disbelief. Zhang Ya Ting couldn't lie. She nodded gently with tears in her eyes and said, "Sister, don't cry. I did it voluntarily. Director Li didn't force me!"

Zhang Ya Li really didn't know what to do. What Li Hu said was too shocking for her to believe. Her face was somewhat petrified, and she stared blankly at the corner of the wall.

"Actually, I know your pain. Ya-ting also told me that you're a woman who needs comforting. Perhaps, perhaps I'm not worthy. Okay, let's pretend today's events never happened. I will always keep your secret of being number one. Of course, if you also object to my relationship with Ya-ting, then I promise I will leave her. If you're still worried, then... then I'll find an opportunity to retire early." Li Hu finished speaking these righteous words and turned to leave. In reality, this was his way of playing hard to get; these words were all meant for Ya-ting. The naive Ya-ting fell for it. Li Hu had already left an imprint on her heart; at least she felt that Li Hu was a relatively reliable man.
Suddenly, Zhang Yating jumped out of bed naked. She hugged Li Hu from behind and cried, "Director Li, don't go!"

Li Hu, seeing his words had worked, felt a surge of smugness, but he maintained his righteous demeanor and said without turning around, "Yating, let go. I, Old Li, have done countless good deeds over the years. Perhaps I've made a mistake this time. I... I'm sorry..." At the end, Director Li even choked up.

This sudden change deeply saddened Zhang Yating. She felt she had wronged Li Hu, and she didn't want to lose him. The only way now was to drag her sister into it too, so her sister wouldn't stop her from seeing Li Hu, and her sister wouldn't have to suffer from sexual torment every day. Zhang Yating turned to her sister and shouted, "Sister, say something! I can accept you, so why can't you accept the two of us? Don't you want a man?" These words made Zhang Yali shudder. Looking at her sister and Li Hu, and thinking about her loneliness every night, she hesitated for a moment before making her decision. Zhang Yali said dejectedly, "Wait a minute!"

Li Hu was secretly delighted, but still said expressionlessly, "Don't worry, I won't tell anyone."

Zhang Yali was extremely embarrassed. She suddenly said softly, "Director Li, don't leave. Will you stay with us tonight?" After saying that, she lowered her head even further.

Overjoyed at the prospect of success, Li Hu turned around and said resolutely, "Yali, don't worry, from now on, I, Li Hu, will take care of anything that happens to you two sisters."

Zhang Yating happily pushed Li Hu to the bedside and said, "Sister, I'll let you have your way first. I know you... hehe."

Zhang Yali blushed deeply, lifted the blanket, and whispered, "Director Li, please be gentle later. I haven't been loved by a man in so long... so long."

Li Hu didn't speak; he was completely captivated by Zhang Yali's body. Zhang Yali and Zhang Yating were about the same height, except Zhang Yating was slightly thinner, while Zhang Yali, having been married, was somewhat voluptuous. Her deep red nipples clearly showed they had been plucked countless times, but Li Hu didn't find it disappointing. On the contrary, the charm of a mature woman made Li Hu even more infatuated. Zhang Yali stood with her legs together and her hands on her private parts, looking coy and alluring. Li Hu had already gently placed his fingertips on her nipples, teasing them until they became erect. Li Hu opened his mouth and kissed Zhang Yali's lips, finding them full and sexy, a different kind of allure compared to Zhang Yating's.

Li Hu used both his hands and mouth, and Zhang Yali's body trembled slightly. Involuntarily, she reached out and grasped Li Hu's penis, stroking it up and down. This experienced woman knew how to masturbate; soon, Li Hu's penis was throbbing with desire. Li Hu's tongue licked from Zhang Yali's lips to her breasts and then to her vulva, and Zhang Yali let out soft moans. Li Hu's tongue touched Zhang Yali's clitoris, and the intoxicating sensation made Zhang Yali feel as if she were being electrocuted, her fingers gripping the bed sheet tightly.

Li Hu spread Zhang Yali's legs and found that she was already overflowing with desire. He had no desire to tease her any further. He lifted her legs and thrust his body forward, his large penis plunging in to the hilt. Zhang Yali's body convulsed a few times, her eyes seemingly moistening. Three years had passed since a man had given her such sexual bliss; a long-lost pleasure filled her entire body. Li Hu's movements were slow and gentle, and Zhang Yali was somewhat moved. After all, men often acted wildly towards women, rarely showing any tenderness.

With Li Hu's thrusts, Zhang Yali gradually reached her peak. Her legs involuntarily draped over Li Hu's shoulders, the pleasure from her vagina making her incoherent: "Ah...so good...ah so good...fuck me harder..."
…Love big cock…bar…ah…um…”

Seeing her sister moaning under Li Hu’s crotch, Zhang Yating couldn’t take it anymore. She sat down next to her sister, spread her legs, and revealed her wet little hole. Zhang Yali picked up a vibrator and inserted it into her sister’s little hole. The two sisters sang together!

Li Hu was very pleased. He kneaded Zhang Yating’s breasts and fucked Zhang Yali with his lower body, listening to the two girls’ wanton moans. He almost ejaculated. Li Hu quickly pulled out his penis, paused for a moment, and then had Zhang Yali lie face down on the bed. Director Li penetrated her from behind, and after some movement, Zhang Yali reached orgasm while trembling. Zhang Yating, who had been unable to hold back any longer, saw her sister reach orgasm and shouted, "My turn, my turn!" She consciously lay face down on the bed, sticking out her sexy little buttocks. Li Hu pulled out his penis and thrust it in deeply, and Zhang Yating moaned with pleasure.

If Zhang Yali was a little shy about having sex with Li Hu for the first time, Zhang Yating, who often had sex with Li Hu, was unrestrained. She kept asking Li Hu to change positions, and her words were extremely lewd. Zhang Yali felt her face burning when she heard them. Li Hu thrust joyfully in and out of Zhang Yating's vagina and reached orgasm together with Zhang Yating.

Li Hu lay on the bed, feeling he could die without regrets. Just then, a wet mouth enveloped his limp penis. His experienced oral sex told him it was Zhang Yali performing oral sex on him. Completely uninhibited, Zhang Yali was even more frenzied and insatiable than Zhang Yating; she wanted more.

As soon as Li Hu's penis hardened slightly, she eagerly mounted him, beginning her woman-on-top assault. Before Zhang Yali could reach her climax, Li Hu couldn't continue. The pain of having no women was unbearable, but having too many women was also painful. Li Hu was caught off guard. Luckily, he had brought a Viagra with him. With the help of the Viagra, Li Hu finally satisfied the two women's incessant demands and then drifted off to sleep…

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