Everyone also felt the change.

At the same time, I even sighed at the extremely hardness of this material.

In fact, such a deep underground cannot bear it without special materials.

There is extremely strong pressure below.

Rumble.

The sound of the roar of the machine.

If Hu Na hadn't said it in advance, the few people would have found it strange.

This rotating machine is to maintain the pressure balance below and needs to rotate twenty-four times.

It can also be said that this is the core of maintaining the underground world and having a normal pressure value.

If there are really people with ulterior motives, if they destroy this machine, the entire underground world will be overwhelmed.

Of course, this kind of machine is not one.

If this is the only one, it would be too easy to destroy it.

There are dozens of such machines.

And the ones that usually run are only two or three.

The others are in standby state, and once there is a problem with one, it will run seamlessly.

Therefore, just by destroying the machine, you can kill this world, and the possibility is infinitely close to zero.

After all, there are only a few running machines, and other machines will not be found unless they are running and making sounds.

And while destroying several machines at the same time, no force can do this.

Ding! Several people finally reached the bottom.
Chapter completed!