The upper and lower teeth collided and rubbed, it was like someone grinding their teeth in Ye Wen's ear.

In the next second, he will pounce on Ye Wen and give him a warm hug and a kiss that goes deep into his bone marrow.

Ye Wen shook his head, didn't aim, raised the blade of the axe and waved it casually, and the blade wind composed of yuan energy suddenly collided and reflected in this small space, and in just a few breaths, all the things standing here, except for Ye Wen, were ground into meat foam.

Ye Wen fumbled to find the iron ladder, climbed to the top, and touched something blocking his head.

It should also be a horse gourd, that is, the lid of the sewer. He knocked around, pushed, and judged that it was not a large weight pressing on it, but just a columnar deadbolt.

Although the door bolt was described by him as "only", but if you were someone else, I am afraid that you can only live alone in this darkness.

And it's not going to be a long life. You don't see the smell of the zombies, and it came from the other side of the passage that is not too far away.

Ye Wen inserted the blade of the axe into the gap between the sewer manhole cover and the wellhead.

The axe is very thick, but the blade of the axe may not be, and Ye Wen only needs to insert a small sharp tip, and the yuan energy can use this as a reference point to gush upward.

Ye Wen drew the axe blade in a circle along the manhole cover, and the yuan energy gushing out from the tip of the axe blade also spun around.

Then Ye Wen dragged the fallen manhole cover and threw it behind him, smashing the head of a zombie.

After coming out, Ye Wen found himself in a small courtyard. Directly opposite is a small three-story building, many of which have clothes hanging outside the windows, and it seems that it is really a dormitory.

The white coat was gone.

Ye Wen snorted, didn't stay long, and quickly left the small courtyard.

Not long after he climbed over the wall and left, zombies poured out like a blowout behind him. This is still because some zombies still haven't evolved the IQ to climb ladders, blocking the road, otherwise the zombies that climb out will be faster and more numerous.

But even if only one crawls out, Ye Wen's whereabouts will be exposed.

So I took precautions, and finally made a big news. Ye Wen was a little depressed, so he had to speed up his pace and search in the research institute.

There are many buildings in the institute, and they are relatively closed, so it is difficult for ordinary people to figure out what each of them does. However, Ye Wen had the introduction of Caixia, half of the insiders, and he had been lying on the roof for so long to observe, so he still had a point on the layout of the research institute, and soon came to the door of the main experimental building of the research institute.

A few zombies have escaped from the dormitory courtyard.

Once you've found enough vaccines for your friends, clean up the zombies around here.

After all, since this research institute can develop a vaccine, it should also have the ability to develop more drugs needed by humans in the last days. And it is not enough to develop it alone, but also to have the ability to produce. And this institute has that capability. So whether it is for Ye Wen himself, or Sun Kaiweiru and other friends, and then promote it, for more human beings, Ye Wen doesn't want this institute to be destroyed.

However, Ye Wen frowned.

Why are all the zombies pouring in, and the people in the institute still don't react?

In his original speculation, since this research institute could survive in the encirclement of zombies for so long, it must have a little means of self-preservation. The evolution level of the zombies in the vicinity is not too high, and it should be able to be controlled by the research institute's own ability, so he is relieved to find a vaccine first.

But the zombies were all screaming and scurrying around in the compound of the research institute, and the research institute was still silent, let alone cleaned up, and there was not even a human outcrop.

And the white coat just now, since there are no zombies in the research institute, and according to Caixia, food and other materials are not so lacking, why did he run away in a panic?

With these things in his mind, Ye Wen's footsteps never stopped, and he quickly advanced in the main laboratory building.

After all, even if he doesn't want the institute to be destroyed, his first goal is always to get a vaccine. He must protect his friends first, and then he will think about others.

The main laboratory building is not small. A long hallway connects the doors. Daylight, which had reached the end of the crossbow, shone through the windows of the relatively clean hallway, and fell on the floor tiles that were so clean that there was not even a piece of waste paper. The smell of disinfectant water that permeated everywhere even gave Ye Wen the illusion that he was in a hospital before the end of the world.

A strong sense of order.

With the howling of zombies getting closer and closer, the weird feeling becomes stronger and stronger.

Ye Wen quickly turned around and made sure that the first floor was full of offices or something, so he ran upstairs.

There are already zombies banging on the glass door of the main laboratory building outside.

Of course, Ye Wen locked the door. The zombies couldn't get in for a while, and after Ye Wen disappeared on the second floor for a while, he seemed to lose interest and walked around the door.

Not even the glass door was smashed.

I don't know if it's because the quality of this glass door is too good, or if it's ......

There's really not much food left for them in this building?

But is it possible? Developing vaccines and producing formulations all require manpower, right?

Ye Wen, who was thinking about it, suddenly stopped.

Ahead, a door resembles a hospital operating room. The idlers are exempt from the four big characters, which are very conspicuous.

The door sign above the door reads "Biochemistry Lab 1".

The door was not closed tightly. There's movement coming from inside. It's just that the door is too thick, and the sound is not loud, so Ye Wen can't hear clearly.

Ye Wen's steps were as light as a cat, he approached the past, gently picked the crack in the door, and looked inside.

This laboratory is a suite. Outside, it was small, like a small office, with two computers, and a few notebooks and a rollerball with the cap removed on the table.

Behind the small office was a closed door, behind which there was a short corridor, and there were many protective suits hanging on the hangers on the walls. It's not the same as Ye Wen imagined, it's just as simple as a coat, although there are protective masks hanging on the wall, and there is also a cabinet next to it to store hoods and gloves, but it is not like a spacesuit that can wrap the whole body.

Can such equipment be able to study zombie viruses?

Further inside is a sterilization room. Further inside, this should be the place where the experiments are actually done. Except for the half-height wall skirting, the rest of the laboratory is a glass-framed structure, which is transparent inside and out. It's just that Ye Wen's position doesn't have a good perspective, and he can't see what is going on in this innermost room.

Ye Wen cautiously and slowly opened the door in front of him, rolled on the spot, entered the office, and moved to the skirt of the wall in a squatting position.

That should be fine.

"I told you so! No way! ”

A woman's anxious shout suddenly came from the innermost test area.