Because of the sudden sinking, Keke hugged Xu Xin's calf tightly with fear.

At this moment, I saw the scene in front of me, and screamed "screaming" and wanted to run deep into the corridor.

Then Xu Xin took her neck and took her to her shoulder.

"Don't run around, it's very dangerous here!" Xu Xin warned.

Yes, it's very dangerous here.

Because these cells, or cages, are not empty.

Behind each metal fence, there are blood-red eyes.

Every cage is locked in an underground creature!

Xu Xin took a look back.

His current location is not the starting point of this prison passage, but the middle part.

Because behind him was a corridor with such a passage, there were still countless cell cages on both sides.

and……

The railings of these cages are all emitting purple light?!

The railings of these cages are all made of purple-grade materials!

It's really outrageous...

He wanted to touch the railing and see what the cage was, but it didn't work.

Because, after the trembling sound of him coming down appeared, the underground mutant creatures in the cage began to get restless.

It was fine at the beginning, but the surrounding cages made some noises.

But these sounds are contagious. In just over a dozen seconds, the mutated creatures in the cage in the entire corridor became a little restless due to the influence of their neighbors.

The sound of hitting the cage, the sound of gnawing on the railings, the sound of scratching the walls and the ground...

At the same time, it is accompanied by the roar of different creatures.

Most of them are the sound of insects.

In this case, if he dares to approach the cage and touch the cage railing, the mutant creatures that are already close to madness in the cage will definitely pounce on it.

Forget it.

Moreover, in this narrow space, these sounds burst out in more than ten seconds, making Xu Xin, who now has hearing amplification, frown.

Especially the sound of some insects is particularly harsh in the outside world, and even more deafening in this narrow underground.

“It’s so noisy…”

He rubbed his temples in distress, shook his head, chose a direction, and walked forward.

Because the cages on both sides of the passage are only about four meters high, most of the cages are giant insects.

After all, in this underground world, cages of this size can be imprisoned, that is, insects.

Other creatures are often over ten meters or even twenty or thirty meters high, so they can't hold such small cages.

However, when he walked about forty or fifty meters, he knew that he was wrong.

This road is not flat.

Instead, it tilts downward.

The point he just came down was the highest point of the underground prison in this underground world.

The ceiling of the underground prison did not tend to lower, but the road under your feet began to tilt more and more.

When you walk here, the road below you has already shown a thirty-degree downhill.

And the cages around them are naturally getting bigger and bigger.

This has caused the underground creatures in the cage to begin to change, no longer all of them are bugs, but their species are becoming more and more abundant.

"Yeah!"

Coco had long been unable to help jumping off Xu Xin's shoulder.

Whenever it arrives in front of a cage, it will stand up and raise two small claws, scream, and scare the mutant creatures inside.

The mutant creatures will naturally not be scared by its small appearance, but they obviously feel provoked and attacked the metal fence one by one.

However, Coco is very smart and does not choose the kind of insects that can spew out venom and mucus to provoke, so these beasts and insects can only be incompetent in the cage, making a clang of the railings, but they have no effect.

"Coco, don't provoke them anymore! What if they really come out!" Xu Xin scolded.

"Yeah!" Coco had enough fun, so he ran back and climbed onto his shoulders.

Continue to move forward, Xu Xin finally found an empty cage and reached out to touch the railing of the cage.

[Underworld Prison (Purple): A prison used to imprison underground creatures. The material is very hard, and even advanced mutant creatures cannot destroy it!]

Good guy!

So strong?

A prison that cannot be destroyed even by advanced mutant creatures!

Except for one side of the metal railing, the other five sides of these prisons are metallic, so the mutated creatures inside cannot escape at all.

Unless they can get out of the gaps in these metal fences.

But the gap in the metal fence is very small. Not to mention their huge bodies, even Xu Xin can't get over it sideways.

After walking for a while, Xu Xin found that if he continued to move forward, the road not only tilted downward, but also rotated!

Rotate downwards!

From this point of view, the extremely thick vine bundle and the underground area where there is no creature around the vine bundle should be this underground prison that rotates downward!

Now where he is, the underground prison has a large space, with a height of at least nearly ten meters.

However, this place is not like when I first came in. There are basically mutant creatures in every prison, but it is much empty.

About one of every three prisons is empty.

The mutated creatures in these prisons are much larger than the previous bugs.

He saw a creature like a dinosaur rolling in the prison, and saw a huge red-eyed rabbit with an extremely large head grinding teeth with the prison fence, hanging in the prison, looking at Xu Xin passing by with scarlet eyes, and a huge python spitting out a letter.

There are really everything in this prison.

He suddenly thought of Coco outside, letting himself follow it, and bypassing a ground.

Shouldn't it? If you step on the place where Cocoa bypasses, you will fall directly into the ground and be imprisoned?

Very likely!

Otherwise, where did these mutated creatures come from?

Moreover, in this case, it would make sense that no underground creature dared to approach the area outside.

After all, those who dare to get close should be all in these cages.

However, if it's rotation downward...

It seems to be somewhat similar to Ji Chaoyang's prophecy scene.

Forget it, keep moving forward.

The more you move forward, the cage becomes bigger and bigger, but it becomes more and more empty.

Up to now, two of every three cages are empty.

But there were already giant beasts locked in those unempty prisons.

For example, the huge prison he is passing by now is locked inside, which is actually a giant, half-sheep and half-cow monster!

The two hovering horns looked extremely ferocious, like a demon, looking at Xu Xin passing by without blinking.

A stream of visible heat ejaculation erupted from the huge nostrils.

...It is really oppressive to get close to these giant beasts!

Even though it didn't move, it was enough to make Xu Xin tighten the muscles in her body.

Coco, who had just jumped away in front of the big bugs, was lying on his shoulders without moving, and did not dare to speak.

Not only did the giant beast appear, but the thickness and material of the metal railing used to imprison the giant beast have also undergone qualitative changes.

The initial prison railing was at most the thickness of his wrist, but now...

These railings are at least the thickness of his thighs!

And, most importantly, these railings actually emit a golden light!

This is a golden quality prison railing!

Xu Xin was shocked.

This is really rich and powerful...
To be continued...