There was no light here, but darkness had no effect on Chen Cao.

The surrounding rock walls are maroon-red with some black substance.

It's already two thousand meters underground.

But that's not enough, two thousand meters deep is just the Earth's crust.

The thickness of the earth's crust is about thirty-three kilometers.

So far, human technology has not been able to penetrate deep into the earth's crust.

Chen Cao found that the temperature here was a little higher than expected.

Chen Cao began to walk through the cracks.

And the width of the crack is not static.

Some places were so narrow that Chen Cao had to use violent means to widen the cracks.

And Chen Cao's incomplete small world provided Chen Cao with plenty of magic power.

The environment here, and the trials of the creatures, are more severe than you think.

If it was before, when he had not comprehended the Chaos Void, if Chen Cao came down, it would only take half an hour, and Chen Cao would either turn back or die here.

Every minute he walked, Chen Cao felt like he was experiencing a big battle.

Mana is consumed like a tide.

However, the golden key in Chen Cao's body is also changing.

Chen Cao felt that his body was no longer so uncomfortable.

At least the high temperature here is no longer the biggest trouble.

The small world is maintaining Chen Cao's own magic consumption.

On the contrary, it reduced Chen Cao's burden.

Today's Chen Cao is in the best state.

The incomplete small world brought a huge source of magic power to Chen Cao, but it also brought a burden to Chen Cao.

And now Chen Cao's crazy consumption of magic power is decompressing Chen Cao's own self.

It's as if the load that used to be carried 50 tons has now been reduced to 40 tons.

Of course, carrying heavy loads has its downsides, but it also has its advantages.

Because Chen Cao's own quality has increased.

When Chen Cao fights with some large or super-large monsters, there has always been a drawback.

Even if Chen Cao's strength is greater than that of the other party, his own weight will cause him to be knocked away without a focus point.

This is like if Chen Cao falls from a high altitude, the impact he can bring is very limited.

Because Chen Cao weighs this weight, it is like a drop of rain falling from the clouds.

If the raindrops can accelerate indefinitely, then the raindrops can kill a person.

In fact, the raindrops can't, because the mass of the raindrops is too small.

But if you change it to a massive object, such as hailstone, then it can really kill people.

That's the impact change that comes with quality.

Chen Cao is the same now, Chen Cao can now be like a monster, directly rampage.

You don't need any fancy moves or attacks, just use the impact to destroy the enemy.

Suddenly, Chen Cao's footsteps paused.

The edge of the small world seemed to feel a force rushing from the front.

Chen Cao immediately used Tsing Yi Xia to protect himself.

In the next moment, a violent heat rushed towards Chen Cao.

That's water vapor with temperatures up to hundreds of degrees.

And the water vapor brought by this geothermal heat has the impact of this small space.

Even Chen Cao couldn't fight it, and Chen Cao was directly hit by the water vapor on the rock wall.

"Huh......" Chen Cao shook his head, the force of this impact was too great.

This is the power of nature, which is completely beyond human comprehension.

However, this also sounded the alarm for Chen Cao.

Even if you are yourself now, you may already be at the top of the food chain in the world.

But compared to nature, I am nothing.

Now I am facing the most terrifying side of nature.

Therefore, he will be even more humble.

Chen Cao continued to move forward, and there was no fork in the road he imagined.

This surprised Chen Cao.

But it's understandable.

There are some land plates that are not stable, and it is normal to have small changes in geological structure.

Of course, the land plate is not a continental plate.

Continental plates are generally between 50 km and 250 km thick.

Chen Cao's current position is only on the surface of the American continental plate.

However, the surface plates will also move.

Chen Cao walked for another half an hour, and suddenly a light appeared in front of him.

The light was not strong, but Chen Cao still saw the blue light.

Chen Cao walked forward quickly, Chen Cao couldn't believe his eyes.

It is a huge lake cave, and the top rock wall of the cave is covered with a faint blue fluorescence.

The fluorescent reflection on the surface of the lake makes it look like a sapphire.

According to Chen Cao's visual measurements, the visible area of this lake is at least dozens of times that of Mirror Lake.

The temperature around is also not very high, it should be the water here that lowers the temperature here.

Chen Cao thought about it again, and felt wrong.

Although this underground lake is very large, the water temperature here will become very high after thousands of years of scorching in this environment.

Chen Cao had already come to the side of the lake and tested the water temperature, but it was actually room temperature water.

If this is a hot spring, Chen Cao can still accept it, but the water temperature here is only a dozen degrees, which is too low.

Unless there is some other source of water here, the water is poured into this place all the time, and then the water here flows to other places, so that the water can be kept at room temperature.

Suddenly, a tentacle came out of the lake and wrapped around Chen Cao's ankle.

Chen Cao pulled his feet and pulled the tentacle's body out of the water.

It is a large, strange-looking octopus with a fluorescent body.

In the next moment, the fluorescence on the fluorescent octopus became brilliant.

Immediately afterward, Chen Cao felt a strong electric current rushing into his body.

However, the strength of the current is very average, and the current does not pose any threat to Chen Cao.

The strong current emitted by the fluorescent octopus instead replenished Chen Cao's magic power.

Chen Cao directly tore off the tentacles of the big octopus, and the severed limbs of the fluorescent big octopus actually splashed a large amount of milky white liquid.

Huh, this is a diluted earth essence?

This big octopus actually has the essence of the earth on its body?

Chen Cao immediately became excited, and directly began to ingest the earth essence on the big octopus.

Soon, the earth essence on the fluorescent big octopus was squeezed dry by Chen Cao, and the fluorescent big octopus also lost its life.

Chen Cao threw the fluorescent octopus back into the lake.

But at this moment, a large mouth appeared in the water, and half of the body of the fluorescent octopus was bitten off in one bite.

Chen Cao looked at the lake, and there was an eye under the lake that was also watching Chen Cao.

It was a water bug, a very large water bug.

Bugs are a very special creature because they are actually the larvae of dragonflies.

But in fact, when the water flies grow into dragonflies, they are already in their old age.

Humans, on the other hand, are more familiar with the beautiful dragonfly, and are full of disgust for the ugly water fly.

This water fly seems to have taken Chen Cao as its prey.

Chen Cao's thoughts are similar, this water fly should also have the essence of the earth on its body.