The Hehuan Sect cultivates alchemy; my senior sister helps me refine alchemy throughout the world.

Shen Yifei set rules for himself: the Cauldron of Myriad Things was his bottom line, and it must never be known to outsiders. He would secretly practice the Yin-Yang Replenishment Technique, and the Human Refining Technique should only be used as a last resort. He would usually play dumb, honestly refine pills, and honestly complete tasks.

As for Qin Wan's five dual cultivation sessions... well, they were purely dual cultivation, without any extraction or replenishment, just for practicing techniques.

While Shen Yifei was lost in thought, the outer gate was already in an uproar.

The news was spread by Senior Brother Zhou.

That day, Senior Brother Zhou escorted Shen Yifei to the inner courtyard. Upon returning, he boasted to his fellow disciples, "Did you know? That woodcutter Shen Yifei, after eating medicinal dregs for three years, has reached the Foundation Establishment stage! Elder Gu of the Enforcement Hall personally recommended him, and he's directly entered the inner sect!"

The servants' eyes nearly popped out of their sockets when they heard this.

"Can you achieve Foundation Establishment by eating the dregs of medicinal herbs?"

"Really?"

"I spend all my time in the alchemy room, there's so much dregs in the medicine, why didn't I think of eating some?"

Upon hearing this, some of the servants began to have ideas.

That afternoon, all the dregs in the alchemy room were snatched up.

The news reached the outer gate the next day.

Upon hearing this, the outer disciples scoffed, "Eating dregs of medicine to achieve Foundation Establishment? Nonsense!"

But when they heard that Shen Yifei had indeed entered the inner sect and had been assigned a courtyard with a pill-making room, they became quite agitated.

"Does it really work?"

"Why not give it a try? It doesn't cost any spirit stones anyway."

As a result, even the outer disciples started scrambling for the dregs of the medicine.

On the third day, the news reached the inner gate.

The inner disciples reacted much like the outer disciples. First they scoffed, then they were skeptical, and finally they joined the scramble for the dregs of the medicine.

However, the inner disciples are smarter than the outer disciples. They don't snatch ordinary medicine residue, but only the residue that has been used to refine precious medicinal materials.

Suddenly, the dregs from the alchemy room became a hot commodity.

Previously, the dregs of medicinal herbs were simply thrown away, but now you have to queue up to grab them. Every day, as soon as the alchemy room opens, a crowd gathers at the entrance, waiting to snatch up the dregs.

Senior Brother Zhou was quick-witted and seized the opportunity to start a business.

He categorized and packaged the medicinal residue, clearly marking the prices: ordinary medicinal residue cost one spirit stone per bag, residue used to refine Qi Gathering Pills cost five spirit stones per bag, and residue used to refine Foundation Establishment Pills cost twenty spirit stones per bag.

This business is incredibly popular.

When Shen Yifei heard the news, he didn't know whether to laugh or cry.

Do these people really think they can build a foundation by eating medicine residue?

He only achieved Foundation Establishment by refining two inner disciples using the Myriad Things Cauldron; it has nothing to do with the dregs of the medicine.

He could only watch helplessly as his senior brother Zhou made his fortune, and as those who were scrambling for the dregs of the medicine suffered from vomiting and diarrhea.

Not everyone is as lucky as him. He ate it for three years and was fine. It's a miracle.

Many disciples who consumed the dregs of the medicine showed signs of poisoning after a few days; some suffered from diarrhea for a few days, while others lost half their lives.

Within a few days, more than a hundred people developed symptoms of poisoning, which quickly attracted the attention of the Enforcement Hall.

Upon investigation, it turned out to be all due to consuming the residue from the medicine.

Elder Gu was so angry that his beard stood on end.

"A bunch of idiots! Medicine dregs can lead to Foundation Establishment? That kid's just lucky! What are you all doing here?"

Despite the criticism, the matter still needs to be addressed.

All dregs from the alchemy room were strictly prohibited from being leaked and were to be burned to ashes. Senior Brother Zhou was dismissed and reassigned to menial tasks.

The practice of consuming medicine residue was gradually suppressed.

However, Shen Yifei's doorstep began to bustle with activity, as people came to visit him every day.

There were outer disciples and inner disciples, men and women, all carrying gifts, with smiling faces, constantly addressing him as "Junior Brother Shen" or "Senior Brother Shen," subtly inquiring about his experience with the dregs of the medicine.

Shen Yifei pretended to be stupid.

"I really don't know, I was just hungry, and this just happened while I was eating."

"Poisoning? No way, it tastes pretty good to me."

These disciples who came to visit him received nothing of value from him, and his door gradually became deserted.

However, he didn't stay idle during this time.

I've almost finished practicing the first level of the Yin-Yang Sexual Enhancement Technique, but I haven't actually put it into practice yet.

This level is actually known to all disciples of the Hehuan Sect; it's considered a basic cultivation technique. However, dual cultivation emphasizes the balance of Yin and Yang, and inner disciples are not allowed to use sexual energy replenishment.

If you need to replenish your energy, you can go to the outer sect and find a disciple with low cultivation level to be your furnace, but that will slow down your cultivation progress.

You have to control yourself when you absorb the energy; you can't absorb too much, otherwise the other person's vital energy will be completely depleted, and they will die on the spot. If the other person's cultivation level is higher than yours, it is also very easy for this technique to backfire.

Shen Yifei was thinking that when Qin Wan came to repay those five times of dual cultivation, he could use her as a practice subject, but when he thought that she was a realm higher than him, he gave up the idea.

Qin Wan has remained silent ever since she took the pills last time.

Shen Yifei was a little puzzled. When she left with the Hehuan Pill that day, her eyes were red, and she looked quite touched. She promised to come when she felt better, but so many days have passed!

Just then, someone knocked on the courtyard gate.

"Junior Brother Shen! Are you home?" It was Qin Wan's voice.

It's like whatever I wish for comes true.

Shen Yifei perked up and got up to open the door.

Qin Wan stood outside the door, still wearing that light red dress, but she seemed like a completely different person.

She looked completely refreshed, and Shen Yifei felt an indescribable sense of comfort looking at her.

"Senior Sister Qin, what's wrong...?"

Qin Wan smiled, two blushes rising on her cheeks: "Thanks to Junior Brother Shen, the Aphrodisiac Pill is surprisingly effective."

As she spoke, she glanced into the yard and asked, "Can we go inside and talk?"

Shen Yifei stepped aside: "Please, please, Senior Sister Qin, please come in."

Shen Yifei led her into the house and poured her a cup of tea. "Senior Sister Qin, please sit down."

Qin Wan sat down, took the teacup, but didn't drink it. She just held it in her hands, lowered her head, and didn't say anything.

Shen Yifei was a little confused: "Senior Sister Qin, you came to find me..."

"I'll keep my promise." Qin Wan raised her head, her face even redder. "We agreed that you would help me refine pills, and I would accompany you in dual cultivation five times."

Shen Yifei's heart skipped a beat, but he maintained his憨厚 (honest and simple) expression: "Senior Sister Qin, are you all recovered?"

"It's all better now." Qin Wan nodded. "More than that, the mishap I had in my cultivation has been corrected, and my cultivation level has even increased."

"Senior Sister Qin, what cultivation level are you at now?"

Qin Wan smiled and said, "Peak Foundation Establishment."

Shen Yifei almost jumped off his chair.

Peak Foundation Establishment?

The first time I met her, she was in the mid-Foundation Establishment stage. She had taken the Hehuan Pill that I had refined and jumped to the peak in five days.

"Senior Sister Qin, you're not joking, are you?"

"Why would I joke like that?" Qin Wan took out a small porcelain bottle from her bosom, the one Shen Yifei had given her. "I only ate three of your Aphrodisiac Pills; I couldn't bear to eat the rest."

"This Aphrodisiac Pill is an aphrodisiac used to enhance dual cultivation. Will it increase your cultivation level if you take it, Senior Sister?"

Qin Wan smiled and whispered in his ear, "Junior Brother Shen, to be honest, the cultivation technique I practice is called the 'Medicine Woman's Heart Sutra,' which is an unorthodox technique of the Hehuan Sect. This technique doesn't rely on absorbing the essence of men to increase cultivation; instead, it relies on absorbing the essence of elixirs."

Shen Yifei was taken aback: "Absorb the essence of the pill? Isn't that just taking medicine?"

"You could say that. The medicine you gave me was equivalent to a hundred pills in one dose. After I absorbed all the medicinal properties, I broke through to a higher level!"

Shen Yifei was stunned. One pill was equivalent to a hundred! He never expected the effect to be so outrageous.

He thought of the Qi Gathering Pill he had just refined; if he handed it over to the Mission Hall, he wouldn't be able to handle the situation!

"Junior Brother Shen," Qin Wan suddenly grabbed his hand, her eyes sparkling, "the pills you refine are different from others. I've been in the Joyful Union Sect for eight years and taken quite a few pills, but I've never encountered one with such a powerful effect. Can you tell me how you refine them?"

"Senior Sister Qin, I'm just a woodcutter, how would I know anything about alchemy? That day it was just pure luck. I threw the herbs into the furnace, burned them casually, and unexpectedly it worked."

Qin Wan stared at him for a long time, then suddenly smiled.

"Junior Brother Shen, you don't need to hide it from me. Everyone has secrets, I understand." She released her grip, stood up, and took a step back. "I came not to pry into your secrets, but to fulfill a promise."

As she spoke, she reached out and untied the belt around her waist.