The strongest reserve for the doomsday

"Huhu~Huhu~Huhu~"

A few of us exhaled through gas masks, making a whirring sound in the larger cavern.

The cave outside is much more spacious and luxurious than the thief cave inside. At the very least, we can stand up here, meet the cars, and no longer have to rub shoulders and move freely. But it seems that the kind of environment inside is not bad...

If the space of the thief hole inside is compared to a QQ car, and it is a little difficult to move the body, then the space of this cave outside is not much different from the bullet train and the Harmony, and it is more than enough to straighten up inside and do anything.

The cave inside is covered in yellow dirt. Now, the cave we are in is surrounded by black-brown yellow granite. Looking at the appearance of this cave, it does not look like it was excavated by hand, but rather like a naturally formed cave.

The outside is relatively empty, and the air is naturally much better than inside the cave.

At this point, I also doubt that this poisonous gas is poisoning people outside or poisoning myself...

When we arrived here, we couldn't help but breathe deeper. But at this time, there is still some residual chlorine in it, take off the gas mask, take a breath of 82-year-old cave air, think about it, forget it.

I took a flashlight and shone it on this cave, and the thief hole we are climbing out of now is in the middle of this cave.

It was dark in front and behind, and there was no way to find an exit.

But if you look closely, you can see that the exit on our right hand is larger.

Near my left, the cavern is gradually shrinking.

Generally speaking, the cave will be larger on the outside and smaller on the inside.

So, I'm now roughly sure that the exit is on our right-hand side.

I pointed to the right hand side and said to everyone:

"I guess the exit is here, if everyone is okay, let's move on~"

The fat man hummed and walked towards the front.

Zheng Qian seemed to have something to say at this time, but her voice was relatively small, and she was wearing a gas mask, so I didn't hear it very clearly.

But when she came over and pointed to the footprints on the ground, I suddenly understood what she was trying to say.

These messy footprints are certainly not fat, because on the edge of these messy footprints, there is a clear footprint.

And the one who is supposed to be fat, so who is the messy footprint on the side

? Who will come to this cave at this time?

At this time, Zheng Yan also bent down, took a flashlight to carefully examine these footprints, and then suddenly said:

"Dao Chief, do you say that there is usually wind in this cave?"

Zheng Yan asked this question very suddenly.

Now that I ask this question, I really can't answer it.

In general, because the cave is a dead end, the air inside is all 82-year-old air, and naturally there is no wind.

But inside this cave, I don't dare to pack a ticket.

But it's very simple to verify, that is, just take off the gas mask and feel it with your face.

The nerves on the human face are the most abundant, and you can take them out to feel the direction of the wind.

Just as I was about to take off my gas mask and feel the direction of the wind, Alice suddenly pointed to the thief hole in the back and said to us,

"Didn't the poison gas drift from here just now?

There must be wind in this hole!

Because, when I was in that secret room with the fat man, I felt a gust of wind with the smell of earth blowing out of the shutter ventilation duct.

And under that shutter is this thief hole, and that thief hole is connected to this big cave.

So in other words, there is wind in it.

Thinking of

this, I also hurriedly said: "There is wind in this cave, what's wrong

, Zheng Yan?" Zheng Yan squatted on the ground, dragged her cheeks, thought for a while, raised her head and said to me:

"That's strange, I suspected at first that these footprints were left by people from before, that is, 30 years ago."

Because the imprint inside the cave can be preserved for a long time if there is no wind blowing.

It's like Armstrong's first human footprint on the moon, and since there is no wind on the moon, that footprint will continue to exist millions of years later.

But just now Alice and the Taoist chief said that there is wind here, so these footprints, from this freshness, are produced within 3 days

! Of course, it is also possible that these people are at our door just now

!"--

The author has something to say:

Zheng Yan's little sister, don't be scared of the sand! Thank you "Lin 17706178992" for the heart

~