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

Shen Yifei felt as if all his energy had been drained.

The dark golden spiritual energy in his dantian shrank to a tiny dot, trembling in a corner squeezed by the demonic energy.

He finally understood that the gap between the Tribulation Transcending Stage and the Nascent Soul Stage was not a great river, but a galaxy.

Gu Yunyan lay there, her chest heaving, her eyes half-open and half-closed.

The demonic energy within her body was still surging wildly through her meridians, stirred up by Shen Yifei's meager yang energy. However, the cold poison that had accumulated for hundreds of years had indeed loosened considerably, and the ice block in her dantian had melted a layer.

However, it's just a thin layer of skin.

"So this is all you're capable of?" Gu Yunyan tilted her head to look at him, a smile playing on her lips. "Weren't you quite capable?"

"You wait here." Shen Yifei lay on the bed, panting heavily. "I'm going to rest for a bit."

"Have you rested enough to continue?"

"Do you take me for a donkey?"

"You're nowhere near as fit as a donkey."

Shen Yifei closed his eyes and remained silent. The spiritual energy in his dantian began to slowly recover, like water seeping from a dried-up spring. The demonic energy, dispersed by the yang energy, gathered again, surrounding the spiritual energy, this time without crowding it out.

Gu Yunyan also closed her eyes, and the two lay side by side without saying a word.

After about the time it takes to drink a cup of tea, Shen Yifei felt a bit of strength returning to his dantian. He turned his head to look at Gu Yunyan. The woman had her eyes closed, long eyelashes, a high nose bridge, and bloodstains on her lips from where she had bitten them earlier.

The demonic energy within her body was still churning, like a pot of boiling porridge.

"Again?" Shen Yifei asked.

Gu Yunyan opened her eyes. "Are you sure you can handle it?"

"We'll know if it works or not once we try."

This time, Shen Yifei was smarter. He didn't rush into battle, but instead placed his hand on Gu Yunyan's lower abdomen. Dark golden spiritual energy seeped into his palm, flowing along her meridians and gradually drawing the demonic energy out of her dantian.

There was too much demonic energy in Gu Yunyan's body, so much that his spiritual energy couldn't contain it at all.

But he wasn't in a hurry, eating it bite by bite, like ants gnawing on a bone. Each time, he would only bring back a small amount of demonic energy, let it circulate in his dantian to refine the impurities, and then send it back.

The back-and-forth was much gentler than before.

Gu Yunyan grunted, "You've finally learned your lesson."

"You can't force it; you have to coax her gently, just like you do with your junior sisters."

"You're comparing me to them?"

"You're more difficult to deal with than them." Shen Yifei tightened his grip a few notches.

Gu Yunyan didn't reply and closed her eyes.

Another cup of tea's time passed, and Gu Yunyan's demonic energy had improved considerably.

"Hongliao told me not to take your life! It seems she still knows you quite well!" Gu Yunyan turned her head to look at him, a smile on her lips, her eyes full of undisguised mockery.

"Sect Master, you are in the Tribulation Transcending stage, while I am in the early Nascent Soul stage. The amount of demonic energy in your body is hundreds of times that of mine. The fact that I was able to survive inside you for the time it takes to drink a cup of tea without being drained dry is already a miracle."

Gu Yunyan turned to the side, supporting her head with one hand and placing the other hand on his dantian, rubbing it in circles.

"Your dantian is quite sturdy; anyone else would have exploded long ago."

"That's right." Shen Yifei said, panting with his eyes closed. "My dantian was forged through countless trials and tribulations. It was almost drained dry by two demon kings in the Hundred Thousand Mountains."

"Demon King?" Gu Yunyan paused for a moment. "You really cultivated with the Demon King?"

"Bai Lu and Leng Shan Yue, one a snake demon and the other a fox demon, are both currently in the mid-stage of the Mahayana realm. If you don't believe me, I'll have them come up the mountain another day, and you can ask them in person."

Gu Yunyan snorted and started rubbing again.

"You're quite the ladies' man, cultivating with demon kings, refining with demonic cultivators, and even sleeping with righteous cultivators. Aren't you afraid something bad might happen one day?"

"What could possibly go wrong? It's just normal cultivation." Shen Yifei opened his eyes and looked at her. "Sect Master, how much of the cold poison has been neutralized? About thirty percent, right?"

"Thirty percent? Hah, aren't you overestimating yourself? You're not even at ten percent yet!"

"What did you say? Less than 10%?"

……

……

Throughout the day and night, the female disciples of Tianji Pavilion could hear Shen Yifei's voice.

The green ivy and the yellow oriole couldn't bear to listen, while the red smartweed pricked up its ears and listened intently, muttering and counting...

The next morning, a violent surge of spiritual energy emanated from the direction of the stone house!

It's Gu Yunyan's charisma.

Immediately afterwards, a terrifying pressure spread out from Shen Yifei's stone house, causing the entire Cangwu Mountain to shake.

Song Hongliao's face changed, and Green Luo's legs went weak, causing her to sit down on the ground.

"Senior sister has broken through?"

Gu Yunyan had been stuck at the early stage of the Tribulation Transcending Realm for hundreds of years, but today she actually broke through.

Song Hongliao bit her lip and ran towards Shen Yifei. Halfway there, she ran into Huang Ying, whose face was deathly pale and who was leaning against a tree, panting.

"Senior sister... Senior sister, she..."

"I know, I'll go take a look."

"Don't come any closer!" Gu Yunyan's voice rang in everyone's ears.

Song Hongliao quickly stopped. Gu Yunyan's voice was full of confidence and even carried a hint of pleasure.

She quickly stopped the crowd and quietly retreated.

Inside the stone house, Shen Yifei lay beside Gu Yunyan, also panting heavily, but a smile graced his face. The spiritual energy in his dantian had completely changed; demonic energy and spiritual energy each occupied half, like two snakes intertwined, each containing the other. At the late stage of the Nascent Soul realm, a single dual cultivation session had allowed him to leap two small stages; a woman at the Tribulation Transcending stage was indeed a great tonic.

He screamed all night; the first half of the night was real, but the second half was an act.

As their conversation deepened, Shen Yifei gradually adapted to the rhythm of cultivation, and the circulation of yang energy and demonic energy gradually stabilized.

Moreover, he discovered that after his dantian reached the late stage of the Nascent Soul realm, it directly devoured Gu Yunyan's demonic energy, making his dantian a true bottomless pit.

He devoured half of Gu Yunyan's demonic energy, and after purifying the other half, he fed it back to Gu Yunyan. The purified demonic energy allowed her to break through the early stage of the Tribulation Transcending Realm and reach the middle stage.

This was Shen Yifei's biggest discovery during this dual cultivation: his dantian was no longer afraid of the impact of the Tribulation Transcending Realm.

"You really aren't afraid of death." Gu Yunyan's voice came from beside my ear, with a lazy smile on her face. "You dare to stuff the demonic energy of a Tribulation Transcending stage cultivator into your dantian when you're only in the late Nascent Soul stage. You can't find another one like that in the entire cultivation world."

Shen Yifei opened his eyes and turned his head to look at her.

"Master, how are you feeling now?" Shen Yifei asked.

Gu Yunyan propped herself up. "The cold poison has dissipated by nearly 30%. The ice lump in my dantian has shrunk considerably, and most of my meridians are now open." She looked down at him. "You're more effective than I expected."

"Will you come again in the future?"

Gu Yunyan raised her hand and slapped his forehead: "Rest first. If you keep going like this, you won't die at the hands of the enemy, you'll die in my bed first."