Incarnate the shadow, this is one of the abilities of the night demon.

After Han Chen has a certain understanding of space, his ability to incarnate shadows has been more enhanced.

As long as he has not reached the level of the legend, or has realized part of the legend's ability in advance, he will not be able to see through his shadow.

Han Chen, who turned into a shadow, shuttled underground. Whether it was soil or rock, there was no obstacle to Han Chen who turned into a shadow.

As Han Chen continued to deepen, the images around Han Chen continued to change.

It was more than three kilometers underground, and Han Chen still found nothing.

Five kilometers, ten kilometers, twenty kilometers...

With the continuous deepening, the magma and the rocks constantly interlaced with Han Chen's shadow, making Han Chen's face more and more gloomy.

He did not find anything, but this in itself was the greatest discovery.

Whether it is Zulongxing or the earth, there is a rich and colorful ecosystem.

Under this ecosystem, no matter where it is, it is full of creatures.

Even if it is the deepest trench on earth, creatures still survive there tenaciously.

These creatures would be very weak, but after the rules of God's Domain are changed, they will produce some mutations that can threaten the lives of ordinary players.

But until now there hasn't been any life, so it's a bit weird.

After going deeper than 3000 kilometers, Han Chen stopped.

He found some special traces here, as well as large blank spaces, and some even looked like karst caves.

As the distance from the center of the earth gets closer and closer, the gravitational force in the ground is getting smaller and smaller. Near the center of the earth, the gravitational force is even close to zero.

This basic physical rule has not changed much with the price of God's Domain.

Therefore, it is not uncommon for a large area of ​​karst caves to appear under the ground.

What really surprised Han Chen was that the cave here gave him the feeling that someone had developed it.

The dark and closed underground did not cause much trouble for Han Chen, who possessed the Eye of the Night Demon. He kept observing the surrounding walls, trying to find some clues.

"Although the wall is not very flat, you can roughly see what the wall looks like, and if you connect all parts of the cave over 2m2, you can form a main road. This is unlikely to be formed in a natural cave. ."

Han Chen walked through the caves and was looking for clues.

Natural karst caves should be high or short, uneven, and of course there are many places below the height of human beings, but the karst caves here, all over 2m2, are all connected together.

This gave him the feeling that it was specifically designed to facilitate the passage of humans.

"If you connect all these places higher than 2m2, in addition to forming the main road, there is a special place, that is, the width is all more than 5 meters."

After discovering this, Han Chen was even more sure that this place should have been artificially excavated. Of course, it may have been artificially controlled when it was formed.

In any case, it must be for people to pass through.

After reaching this conclusion, Han Chen finally determined that he should have found a clue.

Then, several ghost clones separated from Han Chen's body and flew in different directions.

Anyway, there is no danger underground, and it is not wasteful to separate several non-combat clones.

And his deity is thinking about something during this time.

"Assuming this is the main road, why is it like a spider web, intricate? Is it because there can't be too much space underground, otherwise it will collapse? Do not rule out this possibility."

"So, where do these roads lead?"

In order to find the answer to this question, several clones of Han Chen shuttled continuously.

The underground environment is intricate and a three-dimensional structure, so sometimes after walking for a certain distance, you suddenly find that a steep **** will appear in front of you.

Such a discovery surprised Han Chen even more, because it meant that all the caves were one, and it also meant that his guess should be very close to the truth.

After one of his avatars walked a distance, he suddenly noticed that the road ahead was narrowing.

The height is of course the same, but the width has changed from 5 meters to 4 meters 2.

His avatar continued to move forward and found that the width of the road ahead was all based on a width of 4m2, and in some places it would exceed 4m2, but it would not be lower than this number.

This gave him the feeling as if he had entered the branch road from the main road.

"In urban planning, it is of course impossible to make all roads the same width. Of course, the roads with the largest traffic must be wider, and the roads with less traffic must of course be narrower."

"In other words, the caves here have really been artificially modified."

"In that case, I only need to walk in two directions. One direction is toward the narrower and narrower direction of the road, and see where the end point is in the narrower and narrower direction. The other direction is toward the narrower and narrower direction of the road. The wider the direction, there should also be some discoveries there."

"Judging by common sense, the more you walk toward the wider and wider the road, the greater the possibility of encountering danger. Although I am not afraid of danger or the demise of a clone, I finally found a clue. It was interrupted like this."

"So my main exploration direction should be narrower and narrower."

Thinking of this, Han Chen's clone is mainly exploring in the direction where the road becomes narrow, while in the opposite direction, there are only two clones.

Even his deity, um, the avatar of the Night Demon here is regarded as the deity, and he walked in a narrow direction.

After more than three hours of exploration, Han Chen discovered that the road ahead had become 3 meters wide, which made Han Chen more sure of his guess.

After resting for a while and regaining part of his aura, Han Chen continued on his journey of exploration.

Because more than 5 clones are exploring from different directions, although Han Chen's efficiency is very high, the consumption is also not small.

In order to ensure that he has enough power to respond in times of danger, Han Chen must always keep his energy in his body higher than 70%.

After another three hours of exploration, Han Chen suddenly discovered that the road ahead was already only three meters wide.

"The rock materials here are all the same, and there should be no consideration of bearing weight. That can only mean that there are fewer people who need to pass here."

"In other words, it should be from the core to the surrounding branches, there are more and more branches here."

"Considering that the height here is 2 meters 2, then the width of three meters should already be the lowest, and I should be close to the tip now."