"Ah—" Although Ling Xueyan's vagina had already been penetrated by her son-in-law's massive penis once before, she hadn't yet fully adapted to it.

When Wang Yue thrust violently into her, she felt both intense pleasure and considerable pain at the same time.

Wang Yue, who had extensive experience in having sex with mature and beautiful women, knew that his mother-in-law could handle it, so he didn't hesitate in continuing with his vigorous strokes.

Sure enough, after just a few thrusts, Ling Xueyan's pain disappeared, replaced by endless pleasure. She couldn't help but lift her body, wrap her arms around Wang Yue's neck, and press her large breasts firmly against his chest.

Her black silk legs tightly wrapped around her son-in-law's waist, pulling him even closer, as if she wanted to insert his entire body into her vagina.

Wang Yue exerted all his strength, moving his penis in quick, though not very deep, strokes within the limited space created by her legs.

The two of them, lost in a frenzy of desire, engaged in a passionate and intense sexual encounter.

The sound of their bodies colliding was almost continuous. If they hadn't been both practitioners of martial arts with extraordinary physical strength, such rapid thrusting would have likely caused serious harm to them.

Such intense intercourse led to an extremely quick climax. In just over two minutes, Ling Xueyan trembled as she reached her first orgasm of the day, once again experiencing the powerful ejaculation of her son-in-law deep within her vagina.

Wang Yue, while ejaculating inside her, also felt the immense pleasure of his penis being tightly wrapped around by her contracted vagina, an experience that was almost ecstatic.

After a while, Ling Xueyan finally exhaled deeply and said, "It's so wonderful… Good son-in-law, I'm afraid I'll never be able to live without you in this life."

"Who told you to leave? I want you to be my 'vagina mother-in-law' forever, and I want to use my penis on you every day!" Wang Yue declared dominantly.

Ling Xueyan replied emotionally, "Okay, I will always be your 'vagina mother-in-law'… Only for you. Good son-in-law, I really want that."

"No rush. Let's learn the cultivation technique first," Wang Yue said. Although the amount of vital energy released by a woman during orgasm is very small when there is no connection of vital energy, even that small amount is a waste.

Moreover, once the vital energy is connected, the pleasure for both parties will increase significantly, and he wanted his mother-in-law to experience even more intense orgasms.

Although Ling Xueyan was still very eager, having reached an orgasm once, she was able to calm down and listen to Wang Yue's explanation.

The cultivation technique for connecting vital energy was quite simple. Despite Ling Xueyan's limited martial arts talent, with Wang Yue's detailed guidance and the use of vital energy, they were able to establish the connection quickly.

As soon as the vital energy was connected, Ling Xueyan immediately felt the wonderful effects of this practice, which only intensified her desire. She couldn't help but urge him again, "Good son-in-law with a big penis, please… Hurry up and use your penis on me!"

Thud, thud, thud... Just at that moment, there suddenly came a series of knocking sounds at the door. Ling Xueyan was slightly startled and quickly took a deep breath, trying her best to calm her voice before pressing a round button on her desk and asking, "Who is it?"

"Mom, it's me. Why did you lock the door?" Chen Chen's voice came from outside.

Ling Xueyan quickly released the button and said anxiously, "Hurry up and take it out—Chen Chen has arrived."

The materials used to build her office were specially designed; knocking sounds could be heard from the outside, but nothing inside could be heard outside unless the intercom was used. So, even after releasing the button, there was no need to speak in a hushed voice when talking to Wang Yue.

Wang Yue's heart raced as he remembered the time he had spent in her office with his aunt. The feeling of doing such things right under someone else's nose was truly thrilling—especially since Chen Chen was Ling Xueyan's own daughter, making the experience even more intense than what Bai Yan had experienced with Su Mengqing.

So he said with a smile, "There's no need to take it out. I can just hide underneath." With that, he picked up Ling Xueyan, his penis still deeply inserted inside her, and mimicked the position they had used before, arching his back so that his mother-in-law could sit on him. With the desk in between, from the outside, it looked as if Ling Xueyan was just sitting in a chair.

Ling Xueyan didn't want to let her son-in-law's penis leave her, and since there seemed to be no obvious problem, she let him continue. She quickly straightened her clothes before pressing the button to unlock the door.

Chen Chen soon came in and, seeing that Ling Xueyan seemed normal, asked in surprise, "Mom, what's wrong? Why did it take you so long to open the door?"

"Nothing," Ling Xueyan replied nonchalantly before asking, "Is there anything on your mind?"

"I have a document here regarding the cooperation with the Bao family in Gusu. You need to sign it," Chen Chen said, handing her the document.

Ling Xueyan took it and was about to sign it when her body suddenly trembled—Wang Yue had secretly caused his penis to move vigorously inside her, giving her intense pleasure.

Chen Chen, being an expert in martial arts, quickly noticed his mother's reaction and asked, "Mom, are you not feeling well?" As he spoke, he walked around the desk to get closer.

Wang Yue was completely confused. According to the plan, shouldn't Chen Chen have continued to be unaware of what was happening, allowing him and his mother-in-law to enjoy this extremely intense and thrilling experience right under his nose? Why wasn't his aunt following the script at all? What should he do now?

Wang Yue was at a loss. Ling Xueyan, having spent many years in business, was far more adaptable than this young man. Although she was also extremely surprised, she quickly figured out the best course of action.

It wasn't possible to let her son-in-law keep his penis completely inside her, but separating them now would also be difficult to explain. So she immediately lifted her buttocks, allowing most of his penis to withdraw, leaving only the tip inside her.

By that time, Chen Chen had already come over and, unsurprisingly, saw Wang Yue and the situation between them.

"Mom, Xiao Yue, you two..." Chen Chen opened his mouth in shock, looking at their intimate position in disbelief.

Ling Xueyan quickly said, "Chen Chen, don't misunderstand. Xiao Yue and I are just practicing a certain technique."

"Practicing a technique? What kind of technique requires this?" Chen Chen asked, his face suddenly turning red. He had been too shocked earlier, but now that he had regained his composure, he realized what he had seen.

"Xiao Yue, let's stop for now," Ling Xueyan said, trying to stay calm. She stood up, allowing his penis to completely withdraw, then straightened her clothes and explained, "This is a technique that requires joint practice between men and women. It can help improve one's skills at an extremely fast rate..."

She repeated what Wang Yue had said to her daughter, emphasizing that the technique required at least some degree of penetration to be effective.

As Chen Chen listened to his mother, he watched Wang Yue pull his penis back into his pants, his heart pounding with excitement. She wasn't some naive girl who knew nothing—she certainly understood what Wang Yue's penis was... But it was just too big!

Although his mother seemed sincere, Chen Chen didn't quite believe her. And... "Even if it's just a little bit, that's still not right. Xiao Yue is Xiao Xi's fiancé—this is incest, isn't it?" Chen Chen said, feeling deeply distressed.

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