Just as Qiao Yiqiao expected before, there are not many infected people in the fire escape. After all, the door of the fire escape is very narrow, and the range of perception of monsters is limited, unless very few people are in the fire escape when they are infected, or Accidentally wandered into the fire escape, otherwise there are no living things that attract monsters in the fire escape, they will not come in.

So when Qiao Yiqiao and nine other members of the security department entered the fourth floor of the fire escape, there were only three monsters hovering in front of them.

Qiao Yiqiao saw the monster, and the monsters naturally sensed Qiao Yiqiao.

Therefore, the moment they discovered the monster, they had already pounced on it.

"Let go!" Qiao Yiqiao said only one word, and then clusters of metallic objects greeted the rushing monsters.

That's a biological nanomesh.

With weapons, they also have the capital to fight against a small number of monsters. In just a short while, the monsters have been wrapped in metal nano-nets. .

Therefore, when the monsters rushed in front of them, they were already a group of prey trapped in the net and would only struggle.

"Do it." Still without any nonsense, a few people quickly took out their weapons and knocked on the head of the monster in the net. They all knew that time is life at this time. If there is any further delay to attract monsters from other places, So what awaits them is that the plan fails, or even worse, if the monster riots, it will not only fail the plan, but may also lose their lives.

Therefore, within a few tens of seconds, the brains of the three monsters were completely crippled. Afterwards, they put away the biological nano-nets that did not hit the monsters, and did not care about the ones that bound the monsters—the nano-nets contaminated with monster blood. It can't be used without a major cleaning. They have neither the conditions nor the time to clean and recover this - several people quickly took out the folding ladder and began to pry the ventilation hole on the top of the head.

Although Qiao Yiqiao didn't pry this, but he has great strength, as long as he can touch it, he can directly tear the ventilation hole with strength alone, so in just a few seconds, the metal plate of the ventilation hole on his head has been torn After getting down, several people quickly crawled to the inside of the ventilation hole.

At this time, it was only a little more than a minute since they discovered the monster, so one can imagine how fast they were.

The ventilation duct is not an easy place to clean. It can be said that the institute has not been cleaned since it was built. A lot of dust and unknown dirt have accumulated in it. When Qiao Yiqiao entered it, it caused a big commotion. dust.

Even if Qiao Yiqiao was wearing an isolation goggle, he couldn't help being dazzled by the dust at this time.

"Be careful, remember to wipe the window of the blindfold." Qiao Yiqiao warned, and then carefully identified his own route in the dusty sky, trying to reach the monitoring room in one go.

In places where there is no need for ventilation, the feet of Qiao Yiqiao and the security staff are all solid metal pipes. There is no light here, so they can only move forward by memorizing and feeling the map without a vision.

Qiao Yiqiao walked cautiously and encountered several forks in the middle of the road, but was avoided by Qiao Yiqiao. However, it took a full 5 minutes to walk for a distance of tens of meters before finally reaching the first one with a change. Where gas is needed - the first laboratory closest to the passage.

And the metal pipes under their feet also turned into metal plates with gaps like the ventilation holes of the fire escape.

This is the only way to enter the monitoring room of the security department, and they cannot avoid it no matter what. All they can do at this time is to be careful and not make any noise to attract the attention of monsters, so as to survive.

After all, although the ceiling is a little far from the ground, for a monster with perfect motor nerves, jumping three meters is not a big deal. If the monster really jumped up and scratched the metal plate, then all of them It is possible to die here.

Once, twice, everyone crawled very carefully. Although the metal plate with gaps under their feet was strong enough, there were enough people there. With so much weight on the metal plate, it was hard not to make a noise. .

So they had to climb one by one to avoid the sound of the metal plate being pressed out due to excessive gravity.

During the short ten-meter journey, everyone's foreheads were soaked in sweat, and the protective clothing became a little suffocated due to heavy breathing, but everyone held back.

After all, they don't want to die.

Finally, when the last person passed through the ventilation hole, everyone couldn't help but let out a long breath.

Finally passed, as long as you pass this distance, the next step is a solid metal pipe. Even if the monsters hear a little movement, but because it doesn't seem like the ventilation holes will emit the smell of creatures, and even give the monsters vision, the monsters will not He rushed up suddenly.

"Continue." Qiao Yiqiao whispered.

The others also lay down on the spot for a while and then continued to move forward. Qiao Yiqiao was fine, but the others were somewhat exhausted due to nervousness, so they needed to rest for a while at this moment.

No way, although they couldn't get a glimpse of the whole picture, they saw five or six monsters wandering below just from the gaps in the ventilation holes, and this was just a small corner of the first laboratory.

So... most of the monsters are probably on the fourth floor, they should be more careful.

And after passing the first laboratory, the next step is easy, because as long as they pass through this section of solid metal pipe, they can go straight to the security department. There is just a ventilation hole above the monitoring room, and they only need to get down from there.

Sure enough, after a few minutes, they saw the ventilation hole again, and the original metal pipe became a metal plate with gaps laid underneath, and the scene below could be seen from the gap—it was the monitoring room.

Because of the sudden incident, the computer screens in the monitoring room were still dimly lit. Although a few screens had been broken due to unknown reasons, most of the screens were still intact, but only a small part of the screens that were lit at this time were intact. , and the rest are blue screens.

"Can it be repaired?" Qiao Yiqiao pointed to the computer screen below, and asked Mike behind him.

After understanding Qiao Yiqiao's meaning, Mike nodded and replied with a gesture of ok.

Qiao Yiqiao smiled, then looked at the scene below and began to calculate.

There are three monsters in the monitoring room, but the door of the monitoring room is open. I don’t know how many there are outside the monitoring room. The first time they go down must be to catch the monsters and close the door, but the door is made of wood and cannot stop the monsters outside. for how long.

However, there is a metal cabinet in the monitoring room. If he uses a metal cabinet to block the door, he should be able to hold on for a while, but this world will not be too long, so they still have to hurry up.

"I'll count one, two, three. Let's dismantle the metal plate and jump down together to release the biological nanonet." Qiao Yiqiao didn't say this sentence with his mouth, but sent it through the communication equipment inside the security department, silently In the pipeline, the communicator screens on everyone's bodies lighted up faintly, displaying this sentence.

Everyone nodded together. After everyone confirmed, Qiao Yiqiao didn't hesitate any more. Any more hesitation was to give the monster more time to find himself. He said directly, "One, two, three."

The metal mesh under their feet cracked, and when they fell freely, everyone moved toward the center of the monitoring room and released their biological nanometer mesh.

The landing point cannot be controlled in the air, and the direction of their bio-nanometer nets is not accurate, but the only advantage is that they have a large number of people. Even if they are messy, two of them cover the target.

Two monsters were trapped in response, and one, after a moment of stupefaction, rushed towards them quickly.

Qiao Yiqiao had already landed and adjusted his posture. When he saw the monster rushing over, he waved the metal stick in his hand, and the monster was swept away in an instant.

Then the people from the security department quickly recovered the biological nanonets that hadn't been thrown, and released them again. Because the monster was hit by Qiao Yiqiao for a moment, it was seriously injured and couldn't move. All three monsters in the room were eliminated.

Qiao Yiqiao didn't care about making up the knife, so he rushed to the door and closed it, and then moved the cabinet to block the door, and at the moment of closing the door, Qiao Yiqiao also saw the scene of the security department outside the monitoring room - there were more than a dozen The monster is hovering outside the door.

More than he imagined.

Qiao Yiqiao looked solemn. There are so many monsters, and the metal cabinet may not be able to stop them for a long time. Therefore, looking at the members of the security department who are still making up their swords, Qiao Yiqiao said anxiously, "Look at the surveillance, it's too late, there are too many monsters outside gone."

The moment Qiao Yiqiao's voice fell to the ground, the sound of "bang bang" slamming the door resounded throughout the monitoring room.

Mike and the other members took a breath. The door was a wooden door, but the sound just now was clearly metallic. That is to say, in just a few seconds, the wooden door of the monitoring room had been completely destroyed, and the monsters now It was not the wooden door that hit, but the metal cabinet.

And if the metal cabinet is broken—"There are a dozen monsters outside."

Qiao Yiqiao's eyes were full of pressure, which made the members of the security department sweat profusely. They immediately restarted the computer, entered the password, and called up the monitoring.

Never before had time felt so long.

The tens of seconds of booting up, in the eyes of everyone, is just normal. Isn't this normal for a computer in a department like the Security Department that doesn't have any computing pressure?But at this moment, for the first time, they hated why the computers in their security department were all obsolete classic machines.

If it is a new computer, it takes only ten seconds to turn it on, then their survival coefficient will be greatly increased, and the chance of surviving will be even greater.

Instead of now, everyone watched the boot animation with sweat on their foreheads, wishing they could smash the computer and get in to start the computer by themselves.

Qiao Yiqiao's heart was also beating wildly, because in just a few tens of seconds, he had already seen a fist break through the metal cabinet, leaving an obvious raised mark on the outside of the cabinet.

If the strength is stronger, this layer of cabinets will be directly broken through.

"Have you finished reading?" Qiao Yiqiao was a little anxious, because in just a few seconds, there were a few more marks on the metal cabinet.

"Immediately." Mike is calling the monitoring, because the monitoring covers the records of the last few days, and they only need the last record, so they need to drag to find it. When they drag to the end, the screen will freeze, and they need to wait Carton's time passed.

Finally, the picture of Caton disappeared, and they could really see the situation in the laboratory. The monsters were constantly wandering around. They could see clearly how many monsters there were, and they could even see the buttons on the monsters clearly.

But no one cares about how many buttons are on the monster's clothes. They only care about where the monster is, how many of them there are, and how they are distributed. This is the focus of their attention.

"After reading it, you can go."

Mike quickly pulled away the gun he was carrying, and climbed up into the ventilation duct like he was in the fire escape before, trying to leave this place. more and more.

Finally, when the last person also entered the ventilation duct from the front, the originally solid metal cabinet was finally torn apart first, and a skinny hand stretched out from the center of the cabinet.

Metal cabinets were breached.

It was only 4 minutes before they entered the monitoring room.

Qiao Yiqiao's forehead was hot.

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