Outside the door is also a corridor, a very spacious and bright corridor.

The cold wind continued to blow at them, not fast, but it had pierced their clothes and made them shiver in the hallway.

"How can there be wind here? It's cold. The fat man scolded unconsciously.

Gao Chao tightened his collar and said, "It's good that it's not that kind of wind." ”

The fat man naturally knew what kind of wind Gao Chao was referring to, the kind of wind they had seen above before, and as long as he thought of that wind, the fat man couldn't help but feel colder.

Gao Chao continued: "Although this place is at the bottom, if there is wind here, it may indicate that there should be a vent ahead, and it is very dangerous to have no vent in this kind of underground facility." ”

Xia Qing said, "If we hadn't pushed open the glass door, there would have been no wind here." ”

Gao Chao thought about it, and could only admit what Xia Qing said.

If they hadn't pushed open the outermost glass door in the lab, there would have been no convection, and naturally there wouldn't have been such a strong wind.

But where does the wind come from?

They looked at the map and continued along the wide corridor.

On both sides of the corridor on the lowest floor, there are even few rooms.

Occasionally, the room can be found empty, with nothing at all.

The corridor on this side was also very clean, and there was not even any dust on the floor, perhaps because the dust had been carried away by the cold wind that had been blowing.

There were no bullet casings in the hallway, nor were there parts of firearms, one side of the hallway and the other. It's like time travel. One is what it looked like thirty years ago. One is what it will look like thirty years later.

As they walked around the corner of the last hallway, the three of them were stunned again.

I don't know how many times they have been stunned, but this time, it was definitely the most shocking.

Only by raising their heads can they see everything in front of them.

Before their eyes, everything suddenly became clear, and the already high roof was suddenly gone. Instead, there is a naturally formed, completely invisible dark dome, and the space is ridiculously large, even larger than a football field, which is a huge cave entirely.

And all this is not the main reason for their shock.

At the end of such a huge cave, there was a door.

An iron gate.

A black iron gate.

An iron gate unimaginably large.

A rivet cap on this iron door alone is the size of a double bed, and if there is a bell on the door. The bell is probably going to look like a two-story building.

So the three of them were stunned and could only tilt their heads. And for good reason.

It wasn't until all three of them felt a little sore in their necks that anyone wanted to say a word.

"This ...... This...... This...... This, this, this...... Is this the entrance? ”

The fat man "this" for a long time, and finally said this sentence.

Gao Chao swallowed and spit, picked up the map and looked at it for a while before nodding and saying, "It seems that this is the entrance." ”

Xia Qing was also looking at the map, and she couldn't believe it.

This entrance is indeed too big, what is such a big entrance used for?

This question seems to have only gone around in Gao Chao's mind for a while, and then there is no follow-up for the time being.

Because they immediately noticed that a gust of cold wind was blowing from the entrance in front of them.

"Is such a big door not closed tightly?" Although the fat man's eyes were good, he looked at it from a distance for a long time, and he was not sure about it.

They then hesitated around the corner for a long time, and watched for a while, before finally deciding that they should continue as planned, and go to the unimaginably large gate to have a look.

Because the gate was so big, and there was space around it, none of them dared to take another half step forward if it weren't for a few particularly large searchlights at the top of the cave.

No one can say what is unknown in such a big darkness, or behind such a big door.

Seeing that the door was ahead, they walked for a long time before they finally came to the front, because things were so big that they often gave the illusion of being very close.

When they actually stood in front of this door, they realized that this door was indeed open, and it was similar to what they thought, only a crack in the door.

Although it should be called a door crack, in fact, this is a big gap, even if you drive a truck, there is still a lot of margin, but this door is too big, such a wide gap looks far away, and it is difficult to even be noticed.

It was from this gap that the cold wind blew in.

Sometimes the wind is stronger, sometimes it is weaker, but no matter how strong or weak, the wind is cold.

Imagine that this is beneath the Pamirs, and although none of them know for sure the depth of it, there is no doubt that it can accommodate such a tall gate.

It's just too deep here.

How do I get back to the surface?

This is a problem that the three of them have to face at the moment.

Even if they were given a staircase, it would not be easy to walk back to the ground, especially now that they couldn't find any way out.

Only this one door is cracked.

Outside the crack in the door, it was pitch black, but it wasn't because it was really dark outside, it was just because they were still standing inside the door, and the light inside the door made them feel that it was basically dark outside.

It is undoubtedly painful to be in one darkness, to face another.

This door has undoubtedly divided this space into two, and the world outside the door does not seem to be real, but is the world they are in real?

Superb could not answer such a question.

He stood in front of the door, still hesitating.

"Boss Gao, give the order, we have to go over and take a look anyway." The fat man gritted his teeth and said to Gao Chao.

Xia Qing was on the side, and said calmly: "Yes, since we are all here, we can only go over from here to see, no matter what is outside the door, there is always a way, as long as there is a road, we still have hope." ”

Gao Chao was a little surprised in his heart, but he didn't expect that standing in front of this huge iron gate, the fat man and Xia Qing actually formed a tacit understanding, they could decide like this, so what else did they have to worry about?

His injuries were still hurting, but he chose to forget, and until now, he was not willing to rest for a while.

Gao Chao looked at the fat man, then at Xia Qing, he pursed his chapped lips, and finally nodded.

(To be continued.) )