The most important thing in the cultivation of the Qi refining period is the aura of heaven and earth.

Especially for Ye Yi, with eight hundred years of cultivation experience in his previous life, as long as he has enough aura, there will be no obstacles to Ye Yi during the Qi refining period.

Therefore, after refining more than thirty Jin Yuan Dan in one go, Ye Yi's cultivation finally broke through to the peak of qi refining.

"Finally reached the peak of qi refining!" Ye Yi felt the spiritual power in his body, which was more than three times stronger than when he was refining qi eightfold.

It is seven times heavier than Qi refining. It's ten times more powerful.

"If I can break through to the foundation building period, my strength will skyrocket again!"

Building a foundation is the first hurdle on the way to cultivation.

Ordinary people, no matter how poor their qualifications are, as long as they have enough heaven and earth aura, they can cultivate to the peak of qi refining.

However, it is different to build a foundation, and at least 70 out of 10 monks cannot build a foundation.

Because building a foundation not only requires an extremely large amount of heaven and earth aura, but also requires sufficient qualifications and certain opportunities.

Of course, Ye Yi was able to cultivate to the realm of Tribulation Immortal Venerable in his previous life, and there was absolutely no problem in proving his qualifications.

As for chance, Ye Yi himself is the biggest opportunity.

So for Ye Yi, the biggest restriction is still the aura of heaven and earth.

The amount of heaven and earth aura required to build a foundation far exceeded the sum of the cultivation from the first level of qi refining to the peak of qi refining, and the remaining Jin Yuan Dan was already far from enough.

"Now, it's time to go to the mouth of the lake bottom. Ye Yi groaned, stepped out of the villa, and came to the middle of the lake.

As Ye Yi walked down the water, the lake automatically separated to both sides, making way for Ye Yi.

Soon, Ye Yi came to the bottom of the lake and saw that there was a hole there.

Outside the entrance of the cave, there are one after another I don't know if I think it is, or natural lines, which is very strange.

Inside the hole, however, it is unfathomable, and at first glance it looks like there is a whirlpool inside.

"As soon as my consciousness approached the entrance of this cave, it was sucked in by a powerful sucking force. If I hadn't made a quick decision, I would have cut off that trace of divine consciousness in time. I'm afraid that even the soul will be sucked in. Ye Yi muttered to himself.

Thinking of the last time, even if it was Ye Yi, he was a little dignified.

"But now my cultivation is already many times stronger than I was back then, whether it is my divine sense or physical strength, it is far from being comparable to what I was able to do at the beginning. ”

Ye Yi at the beginning was only in the middle of gas refining.

And now, it is already the peak of qi refining, even if it is only one step away from the foundation building period.

"With my current strength, it's not that I can't try to explore this hole. Ye Yi took a deep breath.

In this cave, it is very likely that there is a power that can help him build a foundation, so Ye Yi attaches great importance to it.

After all, the current Wu Chenqi has not cultivated enough to the realm, and it is difficult to cultivate with the help of her Dao body.

With a decision, Ye Yi didn't hesitate much, and directly emanated his divine sense, wrapping the entire cave entrance.

Immediately after, a wisp of divine consciousness was separated and extended into the mouth of the cave.

Almost instantly, Ye Yi felt that inside the entrance of the cave, a powerful suction force pulled his wisp of divine consciousness towards the depths of the cave.

"At the beginning, I couldn't stop the slightest bit of the sucking force. But now, I can barely hold my consciousness and not be sucked in. Ye Yi said to himself.

"This proves that once my cultivation can reach the foundation building stage. It's 100 percent successful in entering this hole. ”

"As for now, it's uncertain, and even if I can get in, I'm afraid it's very reluctant. ”

Soon, Ye Yi had already analyzed the current situation.

However, if he couldn't find the power to help him build a foundation in this cave, it would be difficult for Ye Yi to find enough spiritual power, and the foundation would be far away.

This. It's an endless loop.

If you wait until Wu Chenqi's cultivation reaches the peak of qi refining, even if Ye Yi helps him and Jin Yuanguo provides spiritual power, it will take a full year or two.

This time is a little longer.

"That's it, wealth is in danger, if you don't dare to take risks when you see the opportunity in front of you, what else do you cultivate?" Ye Yi had already made a decision.

He retracted his senses, and with a flick of his hand, the bell appeared in his hand.

Ye Yi poured the spiritual power in his body into the bell at any time, the fourth immortal text.

After all, exploring the entrance of the cave and looking for opportunities is not sending people to death.

Once there was any danger, Ye Yi would be able to use the power of time in the fourth immortal text in time to resist the suction power in that cave.

The next moment. Ye stepped towards the entrance of the cave one by one.

Almost instantly, Ye Yi's face changed slightly.

Even with the spiritual power to protect his body, he felt a tingling pain in his feet, as if there were countless knives cutting at his feet at the same time.

And this is just a matter of stepping into the hole.

I don't know how terrifying it will be in the depths of the cave.

"Let's go down and have a look. Ye Yi gritted his teeth one by one, and his entire body suddenly sank downward.

As Ye Yi's body continued to sink, about ten meters or so, the sharp pain that seemed to be scraping flesh off his body became more and more intense.

Ye Yi's talisman spiritual power has no effect.

The clothes on his body had been completely shattered, and even on Ye Yi's Tailing Immortal Body, there were countless blood marks.

"How many meters can you fall!" Ye Yi's face was calm.

What is this pain?

The pain he had endured in the cultivation realm at the beginning would not be any worse than the separation of his soul.

A mere pain in the flesh. Ye Yi was completely able to ignore it.

Ye Yi's body continued to sink, this time, it only sank about three meters, Ye Yi's feet were already blurred with flesh and blood, and the white bones in them could be clearly seen.

"I can sink some!" Ye Yi sank another meter.

This time, almost all of his thighs for two days were completely bone-left, and Ye Yi finally stopped.

"Here, it's the limit. Ye Yi calculated, his current limit was actually only fourteen meters.

And the whole hole still looks dark. It's simply unfathomable.

There is something in the depths, even if it is Ye Yi, he doesn't know.

"It seems that it will be difficult to do anything with this hole in a short period of time. Ye Yi said indifferently.

No. It's not entirely useless.

At least it can be used to temper Ye Yi's Tailing Immortal Body, don't look at Ye Yi's injuries now, but as long as he recovers after going out, the Tailing Immortal Body will be one point stronger than before.

This method can also be regarded as a method to enhance the strength of the physical body.

Ye Yi looked at the depths of the cave entrance and said to himself: "Although my physical body is no longer able to fall. But the mind can. ”

Now that Ye Yi's cultivation has reached the peak of qi refining, his divine sense has also been greatly enhanced, enough to envelop a radius of about ten thousand meters.

Ten kilometers is the concept of standing in the middle of a city. Under the cover of divine consciousness, it is enough to see every move of an ant in a city of millions of people.

Of course, within this cave entrance, the divine consciousness is limited by the environment, and it is certainly far from being able to extend such a distance, but it is a certain thing that the scope of exploration is wider than that of the physical body.

Ye Yi immediately exuded a trace of divine consciousness and continued to probe into the depths.

Ten meters, one hundred meters, two hundred meters......

Soon, Ye Yi's divine sense had already extended to a depth of five hundred meters.

However, this place was still dark, and the terrifying power around it, frantically sucking, crushed Ye Yi's divine sense.

"It's almost the limit!" Ye Yi's brows furrowed slightly, he didn't expect that he hadn't reached the end of five hundred meters, and he hadn't found anything.

But just as Ye Yi was about to withdraw his divine sense, suddenly, Ye Yi's gaze froze slightly.

"Deeper, there seems to be something!" Ye Yi's heart moved.

"Deeper, deeper!" Ye Yi muttered, controlling his divine sense to continue to move towards the depths of the cave entrance.

510 meters, 520 meters......

At the time of five hundred and thirty meters, Ye Yi's divine consciousness could no longer be controlled, and he was suddenly completely crushed by a powerful and violent force.

This is already the limit of Ye Yi's limit.

It was also at this distance that Ye Yi finally saw what was inside the hole, and the moment he found that thing, Ye Yi's pupils suddenly shrank.