Wang Yue, while sipping up the sweet nectar flowing from his sister's vagina, felt a pang of regret. Although the amount of primordial yin energy wasted was not great, it was the purest form of virgin yin energy. Absorbing it would surely be of some benefit to him.

With this thought, Wang Yue had a sudden idea: perhaps it would be possible to establish a connection of vital energy without actually inserting his penis.

The moment this idea came to him, he couldn't stop thinking about it anymore—if this could achieve the same results as sexual intercourse, wouldn't it be much more convenient? Moreover, there would be no need for actual incest, and he could still help the women in his family rapidly improve their cultivation levels. That was simply too wonderful.

So Wang Yue immediately looked up and asked, "Xin'er, are you feeling comfortable?"

"Brother, it's so comfortable… Xin'er has never felt this good before," Wang Xin'er said, breathing slightly heavily. The climax she had just experienced, as her brother licked and sucked her, was even more intense than what had happened in the car yesterday, so much so that she was almost lost in sensation.

"That's good. Come on, let me teach you a set of mental techniques. Let's see if we can practice them."

"What mental techniques?"

"Don't ask so many questions; just memorize them," Wang Yue replied, not explaining in detail. After giving the instruction, he orally transmitted the cultivation technique to Wang Xin'er.

The technique was not difficult, and Wang Xin'er, being a little prodigy, memorized it after just one listening.

"Come on, let's give it a try," Wang Yue said, sitting down in a cross-legged position and extending his hands towards his sister.

He wanted to see if it was possible to establish a connection of vital energy in this way, by placing his palms against hers. Even if it couldn't produce the same sexual pleasure and thus reduce the effectiveness of the cultivation, it would still be much faster than if she practiced on her own.

Since her private parts had already been seen, touched, kissed, and licked by her brother, Wang Xin'er felt no embarrassment in front of him. She sat down in a cross-legged position, bare below the waist, and extended her hands to meet her brother's.

However, after trying for a long time, they were unable to establish a connection of vital energy.

It seemed that this method of cultivation was not feasible.

Wang Xin'er quickly grew impatient, withdrew her palms, and said with a rosy face, "Brother, this technique doesn't work. Help me one more time; I want to experience it again."

"Sure," Wang Yue agreed readily, taking the opportunity to ask, "Xin'er, do you want to feel even more comfortable?"

He was not giving up and wanted to try another method.

Wang Xin'er's eyes lit up, and she asked, "Can it be even more comfortable?"

"Of course. Come on, lie down first," Wang Yue said, then removing the top of his sister's training clothes and the small vest underneath.

At this point, Wang Xin'er was completely naked and obediently lay down.

Wang Yue carefully examined his twin sister; her small breasts had just begun to form, probably not even reaching the A cup size. The two small nipples were the size of soybeans, pink in color, and the areolas beneath them were so light they were barely visible.

These small breasts looked delicate and tender. Although they weren't as full and sensual as his aunt's, they still made him want to touch them.

So Wang Yue reached out and gently played with the smaller nipple on his sister's left side.

Wang Xin'er immediately felt a tingling sensation of pleasure radiating from her nipple. Although it wasn't as comfortable as when her brother sucked or licked her vagina, it was still quite exhilarating.

After playing with her sister's small breasts for a while, until she writhed in discomfort and a clear fluid began to seep from her vagina again, Wang Yue moved on to the next step.

He tore off his four-cornered underwear, and his already erect penis sprang out. Then he grabbed his sister's slender, fair legs and wrapped them around his waist, positioning his penis close to her vagina.

"Brother, you're not going to… have sex with me, are you?" Wang Xin'er's face turned pale with fear.

Although she had already measured her brother's penis with her hands earlier, seeing it with her own eyes still shocked her with its size.

It was probably nearly twenty centimeters long, as thick as a child's arm, with an oval head the size of an egg at the tip. The veins on the shaft bulged, looking extremely menacing.

If such a large object were inserted into her body, Wang Xin'er was afraid she would be killed on the spot.

"I'll just rub it against you; I won't insert it in," Wang Yue said gently to comfort her, then instructed, "Xin'er, start practicing the mental technique."

"Oh," Wang Xin'er, though scared, trusted her brother and began to practice the technique he had just taught her.

Wang Yue also began to practice his own technique, leaning forward and placing the large head of his penis against his sister's small, plump vagina.

"Mmm…" A man's penis is evolved specifically to bring pleasure to women. The texture of the glans, made of spongy tissue, is completely different from that of hands and mouths. Just by pressing it against her vagina, Wang Xin'er couldn't help but let out a soft moan of pleasure.

Wang Yue held his penis and used the glans to part her delicate vaginal lips. With the help of the lubricating fluid, he rubbed up and down inside her vagina while testing the effectiveness of the technique.

No, it didn't work; no matter how many positions he tried, there was no response.

It wasn't until the tip of his penis pressed against the small opening of her vagina, from which a thin stream of fluid was flowing, that their vital energies finally established a faint connection.

This was a dilemma. Such a continuous contact would not achieve the purpose of cultivation, but if he inserted his penis, even if it was just a little bit, the nature of the act would be completely different.

But to give up just like that…

If they could never establish a connection of vital energy, then of course, Wang Yue would never harm his own sister for the sake of cultivation.

But now that a connection of vital energy had indeed been established, it was hard for Wang Yue to give up.

"I'll just insert it in a little bit; as long as I don't break her hymen, there should be no problem. At most, it'll just be a little deeper," Wang Yue comforted himself in his mind for a long time, and finally made up his mind. With a slight push forward, the glans that were pressing against his sister's tender vaginal opening suddenly broke through and were inserted halfway in.

"Yay…" Wang Xin'er was enjoying the incredible pleasure of her brother's penis rubbing against her vagina when she was suddenly interrupted by a burning pain, and she couldn't help but scream in pain.

"Brother, didn't you say you wouldn't have sex with me?" Wang Xin'er looked down at her brother's penis, which was already half inserted into her vagina. The pain in her vagina and the sense of betrayal made her almost cry.

"No, no; I only inserted it a little bit; it doesn't count as having sex," Wang Yue quickly reassured her, though he was overjoyed in his heart. Because after inserting half of the penis, the connection of their vital energies was finally established, and the cultivation technique began to operate on its own without their need to actively practice it.

"Good, Xin'er, don't be afraid; it just hurts for a moment, and then you'll feel very comfortable," Wang Yue said while comforting his sister, simultaneously twisting his waist to make the half-inserted penis rotate and grind against the entrance to her vagina.

Since the cultivation technique could greatly enhance the pleasure of both parties, and since Wang Yue did not go any further and did not break her hymen, it wasn't long before Wang Xin'er experienced relief after all the discomfort.

She felt that having her brother's penis inserted into her vagina and grinding against her was at least ten times more pleasurable than when he just rubbed against her vaginal lips.

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