Xu Cheng frowned tightly at the moment, just now Zhang Jinyun and a few people came down from the top floor and ran to him, trying to explain to him the strange appearance in the hearts of several of them.

But if this just made Xu Cheng feel bad, then the video data and related speculations transmitted back by Zhang Yi, the leader of the reconnaissance team, directly made Xu Cheng feel uneasy.

In the video sent back, Zhang Yi seems to have gradually experienced symptoms of increased heart rate, increased blood pressure and mental confusion after entering the mine, and according to his own inference, all this should be related to the internal environment of the mine.

Xu Cheng thought for a while, but he was very irritable in his heart, he only had three days, and after three days, he and the trial team and the entire second team would lose their rescue and be abandoned in this barren place full of enemies.

"Help me mobilize the safety construction guidelines for this mine, you can find it for me, the sooner the better!" Xu Cheng hurried to the data room, and he hurriedly urged the soldiers.

Naturally, the soldiers did not dare to slack off, and they found out the safety construction guidelines of the mine after dividing five by two.

"Alright sir, that's it!" The soldier sensibly left the computer.

Xu Cheng hurriedly sat down, he didn't know anything about the horror that happened in the mine, and he couldn't understand the principle, but he knew that since this mine could be mined and collected by humans on a large scale, scientists must have discovered and studied it a long time ago and got a solution to this problem.

And this solution will definitely have an easy-to-understand solution in the safety manual for working on this special occasion!

Sure enough, after simply browsing through a lot of nonsense, Xu Cheng found the source of the evil that happened and the protective tools that were already very mature!

"After the Sett ray irradiates the brains of ordinary people for a few minutes, it will make the irradiated human become extremely irritable and murderous, and at the same time, their own spirits will be completely confused and irrational...... Among the evolutionaries, only those above the fifth order can be basically immune to the effects of this radiation, so the life forms below the fifth order are required to wear radiation resistance helmets before they can enter the work area......" Xu Cheng muttered faintly.

At this moment, he suddenly regretted a little, although the guy named Zhang Yi was only a second-order evolutionary, he was able to carry the pressure and intense pain under the deadly radiation to send back the news for the large army.

No matter from which point of view, Xu Cheng thinks that this guy is a talent, but it's a pity that such a person lost his life under his unauthorized order...

"Call Hong Nam-ryong over... Just say I called him, the sooner the better! Xu Cheng sat in the revolving chair, his eyes glued to the words on the screen, as if studying them.

Not long after, the snapping sound of Hong Nanlong's hurried military boots sounded outside the door, and Xu Cheng understood who was coming in an instant when the snapping sound reached his ears.

"If you come, just sit down." Xu Cheng said lightly: "You go out first, I have something to talk to Chief Hong." ”

Suddenly, all the irrelevant soldiers in the entire room went out honestly, and for a while, only Xu Cheng and Hong Nanlong were left in the room.

"Sir Hong, I have a question for you, I don't know if I should ask it." Xu Cheng pretended to be helpless and said.

Hong Nanlong smiled heartily and said, "Hahahaha, what is this Sir Xu, we are now comrades-in-arms, what can't be said between comrades-in-arms?" ”

"Oh~~" Xu Cheng also smiled, and then asked lightly: "What mine headquarters should know about our mine, right?" ”

Hong Nanlongdi's face changed slightly when he heard this, and he asked with some surprise: "What do you mean by this?" ”

"This place is rich in Sett crystals, and it doesn't matter if there are fewer of them, but once the quantity is piled up in tons, it will produce a lethal dose of Sett radiation." Xu Cheng sneered and sighed, and said, "You said that the people from the military department sent us here, but they didn't tell us about the situation here, what is this for?" ”

Hong Nanlong's forehead was already covered with cold sweat at this time, he didn't believe that the staff officers in the staff department of the military department would be so stupid that they didn't even know this basic problem, so it seems that there is only one reason now, that is, there is a big problem at the top of the combined army, there are even several spies and traitors who are lurking deeply!

"It's... Are we going to contact someone from the military department? We are not the only special evolutionary brigade participating in the battle behind enemy lines this time, the Ranger Army is a sharp knife of the combined army, is it necessary to be severely broken by the aliens in this operation?! Hong Nanlong's face darkened, this matter has a lot to do with it.

"No need...... Let's make a plan," Xu Cheng's face was flat, as if he was talking about a trivial matter: "Since our order is missing, then those guys will definitely not take great pains to tamper with others, so there is probably something wrong with this mine underground, we must go down, the more those bastards have to keep the secret, then the more we have to go down!" ”

The matter was settled, in the empty room, Xu Cheng sat on the rotating chair and thought quietly, and suddenly he thought that there was a warehouse under this guard tower that he didn't know what to hold.

Xu Cheng had some expectations in his eyes, he hurriedly summoned Hong Nanlong and instructed him to find someone to open the door of that warehouse, whether they could go down safely or not, might be counting on this place!

"Why do you think you have to go to great lengths to lock a useless underground storehouse since this tower has been abandoned?" There was a hint of expectation hidden in Xu Cheng's words: "The size of this guard tower shows that there were at least one hundred and fifty security guards living in this place, and these people definitely had the corresponding security protection equipment, but we have not seen any traces of these things in this guard tower or nearby." ”

"Is it possible that they were taken away when they were evacuated?" Ah Qin asked silently, "This is also possible." ”

"Yes, of course this may not be ruled out." Xu Cheng said, habitually raised his eyebrows, and explained: "But if you look at the traces left by these people when they evacuated, the considerable amount of materials was almost not taken at all, and some instruments and equipment that did not have biological locks but were valuable were not transferred but were directly destroyed on the spot, obviously, all this shows that the owner here was in a hurry when he evacuated." ”

Obviously, this simple analysis made the people present feel a little surprised, Xu Cheng looked at the people around him, and continued: "But obviously, few people come to this place, I was here when I occupied this guard tower not long ago, and found that few people came here, and the dust on the ground was very thick, but I saw other shoe prints here except for military boots, these shoe prints were not only very miscellaneous but also very messy, it was obvious that a large number of people came in and out of here not long ago, and they were not soldiers of the regular army, so the result was obvious, These marks were left by the guards inside the towers...... That's probably it, and with all that in mind, I think it's worth taking a gamble. ”

"Sir Xu... You're really amazed at me... Hahaha~" Hong Nanlong couldn't help but praise and said, "You are really a careful person!" ”

Xu Cheng smiled and said, "I hope there is." ”

Half an hour later, the door of the underground warehouse was finally cracked, and the heavy mechanical door slowly lifted, and as the mechanical door was lifted, the light inside automatically turned on, and it was a very bright bright white light, which was somewhat similar to the laser channel in Resident Evil.

But aside from that, to everyone's delight, their move was to accidentally open the artificial passage from the watchtower to the bottom of the mine, which meant they didn't have to risk being found in the pit!

"Sir, we've found radiation protection! There are a lot of them, it seems to be military grade! A soldier excitedly ran over with a helmet and handed it to Xu Cheng.

Xu Cheng looked at the helmet in his hand, resisted his urge to laugh wildly, and asked with some expectation: "Tell me, how many you have seen approximately, just report a low number!" ”

"Report...... I don't know, anyway, there are a lot of dense piles, and there are a lot of guns and armor! The soldier affirmed.

"Hahahaha, heaven will not kill me, Hong Nanlong, let the brothers take out all the useful things, and we will give him a surprise attack from here!" Xu Cheng smiled and took the trial team members, and followed the reported soldier into the somewhat hidden arsenal first.

This is a veritable arsenal, the door is written on this large string of English letters, what is said Xu Cheng himself does not quite understand, after walking in, Xu Cheng saw rows of shelves, each of which has a radiation helmet protective gear, the shape is very light, but also has a sense of smoothness of science and technology.

"Xu Cheng! How did you get here? Wang Meng's voice came from the radio abruptly, and she seemed to be unbelievably covered with a thick anxiety at this time.

"Hey... Feed... I don't have a signal here...... Not good...... Ah~~~" Then Xu Cheng turned off the radio call, and ordered everyone to turn off the remote communication function through the radio, which made Wang Meng completely dizzy!

But Xu Chengcai doesn't care about this, what is this old lady doing, giving information will kill people, if he listens to her nonsense like a big fool again, it will really become a big wrong.

"I'll go, what's that! Single-seater armored car?! Xiahou Min pointed to an armored car that was only as tall as a car on the side, with an incredulous expression.

"This thing is called ...... 'Mole' light assault armored vehicle, and it can only seat three people?" Xiahou Min read the introduction, but was stopped by Xu Cheng.

"Okay, we can't use this thing, take the helmet and armor and leave, this broken place is watched, let's not be too unclean hands and feet, otherwise I'm afraid something will happen." Xu Cheng said and threw a helmet to Xiahou Min and said, "Don't think about those who don't have it, I'm afraid we will have a fierce battle soon after we go down." ”

Xiahou Min nodded, and could only obediently run back to get a set of protective gear and obediently leave this arsenal.

Half an hour later, everyone changed into radiation protection gear, just like the soldier who found the armor said, this place is very well stocked, and after giving each soldier in the second brigade a set of hands, there is only a small part of the stock.

"Move forward silently, all radio communications." Xu Cheng ordered: "Everyone check their guns, we will exchange fire with the enemy at any time." ”

The length of the underground passage was a bit exaggerated, and after marching for nearly a kilometer, Xu Cheng still didn't see the slightest alien figure.

It wasn't until after walking nearly 2.5 kilometers that the slope of the tunnel gradually calmed down, and Xu Cheng saw a terrifying scene at this time.......!