super unscrupulous student

Zhuo Yifan and Qingyan came to the pierced black hole first.Then Xie Dongting, Ryan and others also surrounded him from behind.Only then did everyone see clearly that the thickness of the punctured steel plate was more than 20 centimeters thick!And it is made of two ten-centimeter-thick steel plates superimposed!That is two doors!Zhuo Yifan can be sure that this is only the thinnest part of the entire base!But even so, everyone couldn't help but gasped.

So many steel materials, and such thick steel plates, how did the other party transport them into this mountain, and how did they implant them into the mountainside?

Regardless of being surprised, Zhuo Yifan looked down carefully, and through the penetrated passage, he found that the inside was pitch black and there were no lights.It should be closed by the other party!But with his eyesight, he still saw the situation below clearly.This entrance does not go down vertically, but extends down with a [-]-degree slope.The space distance between the ground and the top floor is about four or five meters!

The careful Zhuo Yifan also saw the two crawler traction devices on the slope, and then asked Xie Dongting, "What are those two rail-like things used for?"

Xie Dongting settled down, looked carefully, and explained to Zhuo Yifan: "This is a crawler traction device, an auxiliary equipment specially made for unconventional motor vehicles such as tanks and excavators, which can help them to be faster and more stable. forward and backward on the slope!"

"So, the crushed marks we found before are actually marks left by some tracked vehicles?" Zhuo Yifan asked with a bright eye.

"Maybe so. But it doesn't look like it was left by the tracks of a tank or an excavator! The traces are straight, more like the traces of a train wheel!" Xie Dongting frowned and analyzed.

"It seems that we have to go in and have a look!" Zhuo Yifan said with a frown.

"It's such a big commotion, and the door is being urged to deliver, the inside must have known about it. I guess they have already prepared. If we go down now, it will be head-to-head! And it is easy to be ambushed by the traps inside!" Xie Dongting reminded with some worry road.

"I can't help it! You can't wait for them to come out on the ground, can you? They can afford it, but we can't afford it either!" Zhuo Yifan gritted his teeth and said.

"Just you guys going in, can it be done? I'm more worried now!" Xie Dongting asked hesitantly.

"Don't worry, even if you're no match, running for your life is fine! It's not like we haven't encountered those high-level fighters before. Didn't we escape in BL last time?" Zhuo Yifan said with a cold snort.His current strength is stronger than when he was in BL, and he is naturally more confident.

"Okay then, be careful!" Xie Dongting frowned, but finally nodded in agreement.

Immediately, Zhuo Yifan, Qingyan, and Ryan, along with nine mid-term masters of Zhuo's family, sneaked into the passage.

After getting down, Zhuo Yifan collected himself and began to observe the surrounding environment.He found that there was a passage on each side, and the location where the entrance came down was just at the intersection of a crossroad.The space below is a size larger than that of ordinary ground buildings.Not only is it five meters high, but the left and right widths are about eight meters apart.Such a large underground fortification, how did the other party do it?