Just when Sima Ziyi and the others left, Yi Cheng was already in the sky above a pond several zhang in size.

"Huh, I knew that this divine soul of Lu Dao was so easy to deceive, and I had already taken out this essence blood, what a waste of time!"

Yi Cheng was happy in his heart, but he didn't expect that he would take out a little blood of the White Tiger Clan, and this divine soul would regard himself as a demon clan.

Looking at the pure and flawless pool below, Yi Cheng's brows couldn't help frowning, the divine soul had just melted into his divine consciousness, infiltrating the information of inheritance in his heart, and then swept away those few drops of essence blood hidden in the unknown place.

The pool below seemed to be calm and waveless, but Yi Cheng knew that there was a bone-eroding demon spring water that made the monks of the entire spirit realm and spirit and demon realms frightened, even if a double consummate monk was in it, or his bones would be gone in a few months.

And if you want to get the art of rebirth, you must go through the washing of the Bone Eater Demon Spring Water, and let your body have the ability to be reborn in the destruction and reorganization again and again.

"Huh, no wonder this rebirth technique will be lost, this entire demon clan is estimated to not have the demon clan of the Mahayana period that can resist the erosion of this bone-eroding demon spring water!"

"Let's get started, let me try what this Bone Eater Demon Spring Water is all about!"

Yi Chengyi gritted his teeth, came to the edge of the pool, and plunged his right foot into the pool first.

"Uh, ah!!"

As soon as Yi Cheng entered the water, he couldn't help but scream loudly.

"Whoa!"

Yi Cheng retracted his right leg in an instant, but in an instant, his right leg had already opened the flesh, and his divine sense could already see the white bones in some places!

Even Yi Cheng was mentally tough, and when he saw his right leg, he couldn't help but feel cold.

"Huhuhuhu"

Yi Cheng gasped loudly, and the injury on his right leg was slowly recovering under his immortal body.

A quarter of an hour later, Yi Cheng's right leg recovered as before, but it was still chilling to think about the tragic situation just now.

But Yi Cheng did not hesitate, and stretched it into the pool again after his right leg recovered.

"Ahh

"Wow"

Yi Cheng retracted his right leg again, but this time he lasted half a breath longer than before!

"Damn, what kind of cultivation method is this, it's just masochism!" Yi Cheng couldn't help but scorn the person who created the art of rebirth.

For half a month, Yi Cheng changed his hands and feet every few days, and then picked up the pool water again and again to wash it on his body, and gradually had some resistance to the pool water.

But at this time, Yi Cheng still didn't enter the water as a whole, because he felt that his exercise was far from enough.

One month, two months, three months

Half a year later, Yi Cheng was finally able to enter the water to swim, but he only lasted a quarter of an hour or two each time, and the flesh and blood on his body completely festered.

A year later, Yi Cheng dived underwater, and it was not a problem to insist on three or five hours.

Two years later, Yi Cheng's body's resilience has almost caught up with the destruction.

There are less than three months left before the three-year period, and Yi Chengzhi has not much time left for himself, if the three-year period is over, he still can't get out, then it is estimated that he can only wait here for millions of years before he dares to go out, and the legendary extinction black fog that can kill the double consummation monk is not interested in challenging himself.

"Try it today, it's time for the ultimate challenge!"

Yi Cheng stood up and walked to the pool again.

"Whoa, whoa, whoa"

Yi Cheng entered the pool, slowly swam to the bottom of the pool, and then sat down cross-legged, carrying the Golden Body of Halloween, and at the same time, the immortal body also automatically repaired the skin eroded by the spring water.

One hour, two hours, three hours

Yi Cheng's body gradually appeared stained with blood, but the surrounding pool water was still clear, and those blood stains melted into the pool water and were quickly purified.

Five hours later, the joints on Yi Cheng's body were already showing white bones, but Yi Cheng still had no intention of giving up.

At this time, Yi Cheng's face was completely purple, even though he was used to this kind of pain, he still sweated on his forehead.

If someone saw Yi Cheng's appearance now, they would definitely think that it was a skeleton stained with flesh and blood.

Yi Cheng remained motionless, letting the pool water corrode his flesh and blood.

Two hours later, Yi Cheng could no longer see the slightest flesh and blood on his body, only a crystal clear skeleton remained, and the other was that the Yuan Ying in the dantian was still there.

There is no wave in this ancient well of the pool, and from the surface, it is absolutely impossible to imagine that there is a person at the bottom of the pool who is experiencing the torment of life and death at this time.

Although Yi Cheng's bones were also corroded by the pool water, the speed was very slow, and he had been tempering his body for more than 10,000 years, and his bones were harder than steel.

Although this bone-eroding demon spring water is extremely corrosive, the recovery speed of Yi Cheng's bones is faster than the corrosion rate.

On one day, two days, or three days, sprouts began to grow on Yi Cheng's bones, and new flesh slowly grew, but it was quickly corroded away in the pool water.

However, the growth of flesh and blood did not stop because of this, and a trace of spiritual power roamed in the crystal clear bones, prompting the flesh to continue to grow.

The newborn flesh seemed to have adapted to the erosion of the pool's water, and the rate of its demise slowed.

At this time, Yi Cheng already didn't know what the pain of the Dao was, but he was just controlling his Yuan Infant to output spiritual power.

Half a month later, the flesh and blood on Yi Cheng's body gradually covered the bones, and the whole person still looked a little eerie, as if he had been fished out of blood.

Although the recovery speed has exceeded the speed of extinction, Yi Cheng's heart can't help but worry.

Within half a month, he had already consumed three bottles of Nine Heavens Spiritual Dew, and the spiritual power consumed by the Immortal Body at this time was too great, and at this rate, the elixir that replenished the spiritual power on his body was definitely not enough.

However, at this time, if Yi Cheng was to stop, he was extremely unwilling, if he couldn't recover this time, he would definitely not have the opportunity to complete the cultivation of this rebirth technique after leaving the bottom of the pool.

After more than two years of hard work, it seems that it is about to fall short, and Yi Cheng is naturally extremely reluctant.

Yi Cheng was recovering while thinking about countermeasures.

Although he still has some spirit wine on his body that can restore spiritual power, those things need time to refine, and Yi Cheng is now very difficult to concentrate on recovering his flesh and blood, and he can still be distracted to take spirit wine.

At that time, the thing that instantly recovers spiritual power is also the Nine Heavens Spiritual Dew, and the kind of spiritual wine called the ninth day of the ninth month that Yu Wenrong refined for himself at the beginning, although it also has the effect of instantly restoring spiritual power, but it is only 10,000 years now, and the year is far from enough, so it is not useful at all.

Seeing that his nine-day spiritual dew was about to be exhausted, Yi Cheng was also anxious, and he gave up just like that, if he missed this opportunity, Yi Cheng would definitely regret it for life.