Cheng Bo didn't release his divine thoughts to try, who knows how deep the Netherworld River is.

The body moved.

He disappeared by the river, and then captured a Saint Emperor-level Netherworld from the castle of the Netherworld Patriarch and searched for souls directly.

After the soul search was completed, he threw the other party away, and grabbed several Saint Emperor-level Netherworld clans one after another to search for souls.

Then organize their memories.

Got a lot of information and intelligence about the Netherworld.

First of all, the Netherworld River runs through the territory of the Netherworld, and although there are many Netherworld beasts in the river, the existence of the Netherworld River is very important to the Netherworld, because the Netherworld Qi that is full of their territory comes from the Netherworld.

If it weren't for the Netherworld, their race would naturally not exist.

At the same time, Nether Beasts also contain a large amount of Netherworld Qi in their bodies, and eating their flesh and blood can also enhance their own cultivation.

Secondly, no one knows how deep the Nether River really is.

Because, the water of the Netherworld River will swallow the divine thoughts.

Once the Netherworld Patriarch sent several Saint Emperor-level masters to make all preparations and sneak into the Netherworld.

As a result, all five Saint Emperor-level powerhouses never returned.

Later, the Netherworld also tried various ways to explore the secrets of the Netherworld, but they all failed.

"What a magical river!"

Cheng Bo became more and more interested.

In a flicker, he reappeared by the Netherworld.

Looking at the flowing black river, he hesitated to go down to the river to explore the reality.

In his opinion, the reason why the Netherworld failed was that they were too weak.

Now, his physical body can burst out with the strength of the peak of the eighth stage of the Holy Emperor, and his comprehensive strength has reached the ninth stage of the Holy Emperor, and he is definitely standing at the peak of the Holy Realm, and he still doesn't believe that a small Netherworld River can stump him.

One step at a time.

Cheng Bo appeared on the river.

"Whoosh!"

Several black shadows suddenly shot out from the river, but they were the ghostly beasts in the river.

As soon as the probe grabbed it, these Nether Beasts were directly imprisoned in mid-air.

Divine thoughts reach into them.

"Huh!"

Cheng Bo let out an exclamation again, because these Nether Beasts actually had no souls, and moreover, they also exuded a rotten aura all over their bodies.

"Necromancy!"

In Cheng Bo's mind, this word couldn't help but pop up.

"Puff puff!"

In the next moment, several Nether Beasts directly exploded, turning into strands of Netherworld Qi and disappearing into the void.

Then.

Cheng Bo's body began to sink.

The Nine Attribute Holy Power formed an energy shield on the surface of his body.

He could feel that the river was eroding his energy.

One hundred meters.

Two hundred meters.

Three hundred meters.

One kilometer.

Sinking to this position, the erosion of the river has increased to dozens of times.

He was sure that even if the Holy Emperor came to this position, he would be completely wiped out by the erosive force in the river.

During this period, he was also attacked by many Nether Beasts, all of which he easily dealt with.

Keep sinking!

2,000 ......

3,000 ......

5,000 ......

This position, even the Holy Emperor can't bear it.

Go on!

Half a quarter of an hour later.

Cheng Bo has fallen into the 10,000-meter position.

The terrifying erosive force in the river water continued to wear down Cheng Bo's holy power cover, this position, even the third stage of the Holy Emperor could not withstand it, but the key thing was that it still did not reach the bottom of the river.

How deep is this river?

Cheng Bo continued to sink while guessing.

Before he knew it, he had sunk 80,000 meters.

He could feel that his holy power shield was frantically consuming.

100,000 meters!

Still not to the end.

Cheng Bo's brows furrowed, he already felt a little struggling.

"No matter what, since they have all come down, we must find the secret of this river!"

Keep sinking.

150,000 meters!

"Poof!"

The Holy Power Shield collapsed directly, completely unable to block the attack of the erosive force in the river.

Fortunately, Cheng Bo's body was strong enough, and during the shock, the surrounding river water was directly shaken, forming a vacuum.

Then, he summoned the Sanctuary.

The flesh continues to be thrown into it.

Then manipulate the Sanctuary to continue sinking.

The Sanctuary exuded a misty nine-colored brilliance, which was extremely sacred, easily counteracting the corrosive power emanating from the river.

But when it came to 200,000 meters, the Sanctuary couldn't hold on.

The mind moved.

Cheng Bo made the world origin power in the Sanctuary burn, releasing a wave of power to strengthen the Sanctuary.

Another 20,000 meters of diving.

Finally fell to the bottom of the river.

The bottom of the river is very clean, and there is no sediment, because there is no sediment that can withstand the erosion of the river.

Therefore, Cheng Bo clearly saw that the bottom of the river was covered with dense runes.

"This rune?"

Cheng Bo frowned and observed these runes, but found that these runes were very far-reaching and profound, and he couldn't understand them at all, but he could feel that there was a kind of great truth contained in these runes.

"What a big deal!"

Cheng Bo sighed secretly and walked forward at the bottom of the river.

Sure enough, as he moved forward, more and more runes appeared in his eyes.

Although he couldn't read these runes, he felt that the erosive power contained in the river water should be related to these runes.

Unknowingly, Cheng Bo had been at the bottom of the river for several hours.

He silently calculated, he should be about to reach the center of the Netherworld!

Finally.

After another hour of travel, he had reached the heart of the Netherworld.

"What's that?"

Cheng Bo's eyes lit up, but he found that there was a lonely grave in front of him.

"How can there be a grave at the bottom of the river? What kind of existence will it be if you can put a grave at the bottom of the river?"

With curiosity, Cheng Bo quickly walked towards the lonely grave.

But as he approached, he felt a sense of sadness.

This grief emanated from the depths of his soul and was not affected by external influences, making him feel as if his loved ones were buried in this lonely tomb.

"Why am I sad?"

Cheng Bo was puzzled and continued to approach the lonely grave.

Finally, he came to ten meters in front of the lonely grave, and his tears fell uncontrollably.

Reaching out to wipe away the tears, new tears welled up immediately.

"What the hell is going on?"

Cheng Bo was even more shocked in his heart, no longer approached, stopped ten meters away from the lonely tomb, and stared at the lonely tomb.

This lonely grave is not large, it looks like a small tomb.

"Who is buried in this lonely grave?"

Cheng Bo had a strong sense of curiosity in his heart.

"No, I want to see!"

With a dodge, he rushed to the lonely grave, took out a long sword, and planned to dig up the lonely grave that made him feel sad.

"Dang!"

When the tip of the sword touched the lonely grave, there was a sound of gold and iron.

"Yes, this lonely tomb can withstand the erosion of the river for so many years, how can it be easily destroyed!"

In the end, Cheng Bo took out the top imperial soldiers given to him by the young lord.

Then pour the strength of the whole body into the lonely grave and dig it up.

"Poof!"

The blade of the sword only pierced an inch into the lonely grave, and then picked out a bit of dirt.

Cheng Bo subconsciously grabbed this bit of soil and looked at it, and found that the soil also contained a certain aura of the Great Dao.

Then, he threw his dirt into the sanctuary.

What he didn't expect was that after entering the holy realm, the dirt as large as the size of his fingernails suddenly skyrocketed, and instantly turned into a giant peak hundreds of thousands of zhang high.

"This ...... What the hell is this mound?"

Cheng Bo was shocked, looking at the giant peak, speechless for a long time.

What he didn't expect was that with the appearance of this giant peak, the evolution of the Sanctuary World actually accelerated, and soon, the most primitive creatures were born.

"Against the sky, my grave!"

Cheng Bo was dumbfounded, and then dug up a little bit of grave soil and threw it into the Sacred World.

This bit of grave soil flew in spontaneously to merge with the giant peak, and then doubled again.

As a result, the evolution of the Sanctuary World accelerated again.

Suddenly, Cheng Bo was greatly inspired, and dug up the grave soil one after another and threw it into the holy world, making the mountain higher and higher.

Eventually, it became a super mountain with the top of the sky and the bottom of the mountain.

However, after Cheng Bo threw it into the grave again.

The giant mountain no longer grows taller and begins to develop horizontally.

And at this moment, sea creatures have appeared in the Sanctuary World.

It can be seen that evolution is accelerating again.

"Keep digging!"

This time, Cheng Bo did not throw the excavated grave soil into the Sanctuary World, but gathered enough fist-sized soil to throw it in together.

"Boom!"

The fist-sized grave soil entered the Sanctuary World, causing the giant mountain to expand wildly, and Cheng Bo also sensed that with the expansion of the Grave Giant Peak, his Sanctuary World was also expanding.

Double!

Twice!

Thrice!

…………

In an instant, the Sanctuary World directly expanded tenfold, and at the same time, a force fed back into his body from the Sanctuary World, actually causing his physical body to directly break the eighth turn of the "Nine Turns Battle Body Skill" and enter the ninth turn!

And the strength of his physical body directly stepped into the ninth rank of the Holy Emperor, and it was still at the peak level.