The material of the black gate is a little special, it seems that it is not a simple metal, and the electric welding joint does not spark on it, and when using gas cutting, it is found that the temperature cannot reach the melting point of ordinary metal.

Xu Mengyi picked up the electric drill and poked it at the black door, and it took a few minutes to scrape out some powder, which was considered to have some effect.

Wang Yi stopped Xu Mengyi's movements, took the toothless saw and drew out a square pattern with a side length of forty centimeters on the right half of the door, and prepared to open the small door.

Then the processing began along the scratched marks, and after tossing for a long time, both of them were sweating profusely, and a mess of scratches were scratched on the black door.

It was five o'clock in the morning, and the marks on the black door were more than 1 centimeter deep.

Xu Mengyi put down the electric drill in his hand and gasped: "I said brother, how thick is this door?" ”

Wang Yi was also tired enough, stopped what he was doing, leaned against the door, and knocked on the door behind him with a toothless saw.

There is not a single echo, although I can't guess the thickness of the black door, but it is definitely not thin.

"The thickness of the bulletproof armor plate is mostly three or four centimeters, if this door is really reinforced, it is estimated"

Wang Yi couldn't say any more, got up and stared at the black door in front of him in a daze.

Xu Mengyi then stood up, laughed dryly, and said, "I saw that the thickness of the underground vaults in the movie was almost more than 10 centimeters." ”

Wang Yi let go of the toothless saw and threw it to the ground, pinched his sour fingers, and said: "It's not that exaggerated, because of its own weight, the door is mostly sandwiched light materials in the middle, and some also add heat pipes and electronic equipment, so the skin on both sides is firm." ”

"Ten centimeters, that's enough for us." Xu Mengyi glanced at the time on his phone and said, "What should I do, it's past five o'clock now." It's only 1 centimeter away, should we continue or go to Dafeng and their side? ”

"No weapons won't help much."

Xu Mengyi asked, "Are you sure there is a weapon behind this door?" ”

Wang Yi thought about it for a moment, sent a communication to Mi Xue and them again, and after discussing it on both sides, it was decided to see what was behind the door.

There must be a secret to the appearance of such a building in the sewers, and the most fearful thing is that this will be a vault or something. That's a big joke.

Xu Mengyi bent down to pick up the electric drill and said, "Okay, greet." ”

"Rest for a while, rest for a while, Brother Xu for a while."

After tossing for two hours in a row, I had to slow down my strength.

Wang Yi and Xu Mengyi leaned on the iron door and chatted, each said where they were from, relaxed and discussed some of the past, and then pulled the topic to speculation about this building.

"Wang Dashao. You think this place can't be a real vault, that's. ”

"No, if it's really a vault, it has to have some mechanism or something."

Xu Mengyi pointed to the ceiling and said, "Then what do you say this hall does, and that corridor, there is nothing." ”

"Whatever, just open the door."

Wang Yi thought about how smoothly it would be to enter this passage here, and the gate was indeed so strong. There shouldn't be no alarm device, but there is a mechanism on the inside of the door. Or maybe there's a mechanism on the door.

And then there's the electricity here, humans have been gone for so long, how is this place running, and what is it maintained?

After a break of about ten minutes, I started work again.

Wang Yi didn't have so much patience to consume, plus the previous speculation. Changed the method and said: "Brother Xu, you first make a small hole in those gaps to see if there is a mezzanine, and if there is, directly pour explosives into it." ”

Xu Mengyi gestured at the square door and suggested, "There are cracks." We can try to blow it up a few times now. ”

"yes, let's go."

Wang Yi fixed the ammunition on the door, and Xu Mengyi moved the tools in the hall one by one to the corridor outside.

The outer waterway shook violently by the explosion, and several white paper warriors covered in red patterns moved towards the southern end of the waterway.

The smoke cleared, and Wang Xu and the two returned to the hall, where there was not the slightest change in the square door.

"It seems that this door is stronger than we thought." Xu Mengyi said.

"There's no way, let's continue with what we had before, you knock out, I'll dismantle the ammunition, and I'll replace you in a while."

The drill bit broke a lot of roots in a few hours, but fortunately I brought a lot of spare ones until gray powder appeared in the borehole.

Xu Mengyi called Wang Yi over after discovering this anomaly and asked, "Did you hit the mezzanine?" ”

Wang Yi dipped the gray powder at the entrance of the cave, sniffed it, sniffed it on the wall next to him, and then took a toothless saw to make a cut on the cement wall, and the powder that fell was the same color.

Xu Mengyi suddenly came to his senses and said, "Joke? ”

Wang Yi pronounced the word "haha" and was speechless.

The two sat on the ground in frustration, knowing that behind the door was the same concrete wall.

"Am I missing?" Xu Mengyi asked.

"You're hitting the middle."

After tossing for so long, it is really unacceptable to get this result.

The cameras in the lobby and passageway were tuned to other parts of the sewers, trying to find another base, but there was little confidence.

Wang Yi and Mi Xue established a communication and said, "We are ready to go over, ask Brother Xiafeng, how will we fight when the time comes?" ”

"Xiao Yi, have you found the ammunition?"

Mi Xue sat in the co-pilot's seat, this place was easy to attack the gargoyle, and now it was Chen Feng who was driving the flying carpet.

"No, we worked in vain, while we still have the strength to help you withstand the giant's attack."

Michelle adjusted the angle of the screen and said, "Okay, then you say." ”

Chen Feng answered: "What's going on over there, didn't you find a base, and it's not ammunition in it?" ”

"Don't mention it, it's a fake door, I don't know which one is full of food and is fooling people here."

Wang Yi let him look at the black door behind him, and explained what was drilled out above, and there was still a cement wall behind the door.

Chen Feng was stunned when he noticed the two letters in the upper right corner of the door, and said, "Impossible, no one should be so boring, why don't you remove the entire iron door and take a look?" ”

"Big brother, we only made such a small hole for so long, you don't know how strong this door is, I think it's better to forget it, save some strength and replace you." Wang Yi said in frustration.

"You try again, we can hold on here." Chen Feng insisted.

Xu Mengyi didn't want to fight with the gargoyle, so he said, "Then let's go to other places to find out." ”

"No, you can just look there, it's too unusual for this place to have such a door." Chen Feng said.

Wang Yi felt that Chen Feng seemed to be very convinced that there was something here, thinking of his military identity, and asked, "Brother Feng, do you know anything, this thing is related to your military?" (To be continued......)