Looking around, there was silence at the moment. Zhang Xu turned around and whispered: "Let's go." Time was tight, and he had no time to wait for Zhang Lei to be in a daze, but strode across this bloody land.
Zhang Lei, who had calmed down, was not so pretentious. After all, she was someone who had walked out of a group of corpses. She could accept these bloody scenes. She let out a breath and continued to move forward.
Level 4 laboratories need to wear positive pressure protective clothing, because the average pressure of the entire laboratory is -30 MPa, and its core is close to -50 MPa. The reason for this is to prevent the air from flowing out and prevent the spread of dangerous experimental products.
Generally speaking, vacuum refers to a space without any gas and the pressure is 0. However, this condition is as difficult to achieve as absolute zero.
And if the air pressure is negative, then the laboratory is like a sponge, which will only suck in the water from the outside until the indoor air and outdoor air pressure are consistent.
This also makes it difficult for those microscopic experiments to spread out of the air. As long as there is an abnormality in the air pressure, the entire laboratory will be sealed immediately.
The space here is limited, unlike the laboratory in the Vaal Industrial Park, which is more complete and does not just have an experimental area.
Because of this, in order to cause unnecessary trouble, Zhang Xu did not break in rashly. He chose the same method as ordinary people, entering through gates one after another, from disinfecting and cleaning to changing clothes.
Zhang Xu listened to Xiao An's instructions and walked step by step into this unknown laboratory. Zhang Lei, who was behind her, slowly stopped and looked at the dried blood stains sticking to the surroundings. Several corpses had exploded all over their bodies. A very tragic scene came straight into her eyes.
Normally, in a normal earth environment, a standard atmospheric pressure is 101.325 Pa. When this force is placed on a human body, it is equivalent to a kilogram of pressure per square centimeter.
If it weren't for the fact that there is a strong atmospheric pressure inside the human body, which balances the inside and outside, the person would have been burst by the pressure inside the body.
Because the pressure of outer space is less than that of the earth's atmosphere, the laboratory here is also similar to outer space. Here, a person without a positive pressure suit is just like in a vacuum, with his blood boiling and trying to escape from the body. In the end, the whole person will be unable to resist and his skin will explode.
Zhang Xu, who was unmoved, ignored these corpses, just glanced at the way they died, made a speeding up gesture to Zhang Lei, and continued to move forward. These people were trying to convince themselves that there was no damage on the surface, but the people inside were already torn apart and had a big hole in their faces, which was very shocking.
The clothes were not damaged, which meant that someone used the control room to open the air valve of their positive pressure suits, and relied on the pressure difference between the laboratory and their bodies to kill these people.
Although most of the water in the flesh and blood had been drained away by pressure, the color was still a bit bright red. The blood stains had not solidified and turned black. It was estimated that it only lasted less than a few minutes.
It means that the murderer left not long ago. Zhang Xu also learned this, so he did not slow down and left the experimental area as soon as possible. When he reached the control room, even if the door was closed, the air pressure there was normal.
Pass through the experimental area, pass through several gates, and enter the safe control room door. The door was not closed, and there was no one inside. As Zhang Xu expected, an uninvited guest had already left.
As for who it was, he didn't know yet, but it was obvious that he had a grudge against the people in the laboratory, otherwise this person would not have used such a cruel method to cause the highly educated experimenter to explode to death.
"Huh?" Zhang Lei stared at the holographic screen above Zhang Xu. At this moment, a panel information made the woman's heart tremble. It was Wang Mengkai!
Zhang Xu has used a quantum device to hack into the computer in this laboratory. After all, this is a console. If you want to get in, you need a lot of power. It doesn't take long to break into the computer.
From the surveillance video, it was obvious that four people walked out from here, one holding a rifle and driving away the three in front. However, because these four people were all wearing positive pressure suits, it was difficult to tell who they were.
Zhang Xu remained silent, looked around the console, and quickly found a thick blue book. He said solemnly: "Wang Mengkai is not in the laboratory. He is probably from the group just now. Please help me get the information from this laboratory first." Transfer the experimental data and experimental plan." After that, he pointed to several folders on the screen and handed her a mobile hard drive. He didn't care about the anxious look on Zhang Lei's face.
The research information in every Level 4 laboratory is extremely precious, not to mention that this is Country R, and they are very obsessed with human body research. There may be some new human body research in it. No matter what it contains, whether it is harmful or helpful to him, he must understand it. It will benefit him without any harm.
"Brother Xu..." Zhang Lei spoke a little fast, but she still paused and followed the instructions. After that, she kept staring at the progress bar on the screen.
Zhang Xu looked at her anxious look and couldn't help but smile. He closed the booklet in his hand heavily. After seeing the progress bar completed, he smiled and said: "They didn't go through the main entrance, they must have gone through the safe passage." , If we want to find them, do we need to adjust the monitoring one by one?" He changed the book, and there were four big characters of "User Manual" written on it, which was meaningful.
Hearing this, Zhang Lei suddenly realized and looked deeply at this mysterious man. He was so calm and every step of his analysis was very accurate. Taking the hard drive, Zhang Xu left and took Zhang Lei to the safe exit.
The two quickly walked out of the laboratory. It was bright outside the exit, and the sunlight penetrated deeply into Zhang Lei's pupils. Facing the city filled with the roars of zombies, she felt as if she was lost in the sea, giving her an inexplicable sense of loss.
How is it possible to find a few people who are hiding in this endless city?
Looking at Zhang Xu who was smiling and saying nothing again, he looked relaxed and confident. Zhang Lei's eyes flashed with shrewdness. She knew that the man in front of her must have a solution.
Zhang Xu didn't hide it either. His eyes were glowing green, his twinkling eyes turned slightly, and he walked away in one direction. It seemed that he had discovered something!
Zhang Lei chose to follow without hesitation. As she ran less than a kilometer away, a gunshot tugged at her heartstrings, and she stared into an abandoned building.
The sound attracted the surrounding zombies, who roared and approached the door of the corridor. They stretched out their skeletal fingers and kept groping for the iron door, trying to break it open and eat the delicious food behind the door.
"Looks like we found it." Zhang Xu murmured to himself. He knew that the other party had difficulty moving, because there was no pressure at the door, which meant that they had no time to take off these heavy clothes.
Using the insect sensor, it was easy to search for the group of people nearby. Zhang Xu also heard the gunshots and couldn't help but frown.
…
"I...! What happened to me..." As one person said in a low voice, he gasped and looked at the three people in front of him, "Why did I become like this!"
In front of the dusty dressing table, the man saw his chilling face through it, feeling frightened and angry.
The man raised his hand in excitement, and saw that he was wearing a heavy positive pressure suit. Looking through the circular observation hole in the mirror, he saw a black skull exposed under a black and gray face, looking like a human being. The appearance of a human being and not a ghost is very scary.
"Don't get excited... In order to save you, we must not... uh." Seeing the man holding the gun agitated, a hunched figure walked out of the three people. His voice was vicissitudes, and he immediately tried to persuade the agitated man, for fear that What a stupid thing he did.
But before he finished speaking, red flames appeared from the black hole of the gun. The man who was pierced by the sudden bullet covered his wound and collapsed heavily to the ground, moaning from time to time.
Although the positive pressure suit is not as good as modern body armor, it still has certain protective capabilities. It can alleviate part of the kinetic energy of the pistol bullet, so it was not possible to kill the old man by a thousand.
"Teacher!" Someone suddenly reacted and immediately threw himself next to the old man. His voice trembled, "Wang! Meng! Kai! Are you crazy! If your mentor hadn't given you all his help, would you have survived until now?" The man turned his head, his angry tone mixed with deep chill, not afraid of the gun in Wang Mengkai's hand in front of him.
Seeing the tense situation between the two, the fourth person immediately spoke up and tried to dissuade him: "Okay, you all calm down...Wang Mengkai, you have brought us out now, what? You still don't believe in the zombies downstairs?" ?”
Wang Mengkai's hands kept shaking. The black gun was like a hundred kilograms of iron, so heavy that it made him suffocate. He looked intently at the old man who fell to the ground. This was his first time shooting at a living human being. The blood everywhere frightened him.
"Zhengzhi, don't blame him. Everything he is doing now is caused by me... Ahem." The old man's old voice became duller, "Maybe, this is my final destination..."
Suddenly, a sound came from the balcony, which immediately made the four people's heartstrings tighten.
Wang Mengkai looked at the old man on the ground at a loss, and then at the others. "Go, you have a gun in your hand, who will go if you don't go?" The young man named Zhengzhi suddenly said this.
Hearing the sarcasm, Wang Mengkai took a few steps forward, swallowed, and then stepped back unconsciously, with the black muzzle of the gun facing the balcony. After he finally came out of the laboratory, he found that the outside world was completely different from what he had imagined. From the moment he saw zombies, he felt fear in his heart.
Before he could react, the other side of the balcony made a move first. A thin black film passed through the crack of the balcony door and slid upwards. The iron locks separated instantly like a hot channel cutting butter.
With a creak, the wooden door opened. Wang Mengkai's heart trembled. He didn't believe that anyone would stay on the balcony. Seeing the danger approaching, he gritted his teeth and fired again.
It's a pity that the golden bullet penetrates the threshold. People who have never fired a gun can only hit the target at close range. If it is a little further away, the recoil will be reflected immediately.
Seeing that the shot missed, Wang Mengkai didn't think so much. He fired several times. It wasn't until the trigger clicked that he slowly stopped what he was doing and fired a dozen bullets at once. The wooden The door let through several rays of sunlight, which slowly scattered on the floor.
