The materials needed for the next laboratory upgrade, Su Wen is not in a hurry, waiting for the research institute to refresh tomorrow and see if there is any dog luck to get the materials.

Now all you have to do is wait.

He then opened the chat room to see what had happened to everyone.

In the chat room, most of the people have already reached level two, and it has only been four days.

[I don't know if there is a newbie protection period here.]

[I just saw a guy say that he is about to go to level three, and now he is short of coolant. [

What is the coolant?]

[I have seen the third-level boss, and he is now exchanging alloy plates with others.

[I heard that the wires will be useless after the third level, and the bigwigs will throw us if they have any excess.]

[To be honest, I haven't gotten anything useful at all in the past two days, compared to those European emperors, we are really miserable.

[What people use is lifespan, can you compare?]

[I'm going out tomorrow, I hope I can find materials to upgrade to level three this time.]

[Is there a big guy who said that what will become of the laboratory after being promoted to the third level?]

[The thing in here is so scary, I went out just now and met a mosquito bigger than my fist, but fortunately it didn't bite me, otherwise I would have sent it. [

I also found a lot of food and water, I held on for a week, I was ready to fight and I couldn't go out, someone who needed food could exchange materials with me. [

Brother, is the wire okay? I'll talk to you privately.

[Does anyone have medicine, my thigh hurts to death, and it's really uncomfortable to be bitten by zombies╯_╰, I have an axe, a bunch of food and drink, and a lot of materials, and I'm willing to exchange everything for medicine. Su

Wen saw this buddy again.

He has been begging for medicine for the past two days, and it seems that he really can't hold on now.

In this case, medicine can be said to be the rarest thing, and it is simply unavoidable.

Who would be stupid enough to exchange such a life-saving thing for materials?

At this point, he fell into deep thought again.

He now has a serum that can make antidote to zombie poison, but the material is poor.

Then the others who have been promoted to the third level should be the same

! Why hasn't one person made it?

Among the tens of billions of people, there are always some who can get zombie blood!

After a moment of silence, a bold idea flashed in Su Wen's heart.

Could it be that after upgrading the lab, everyone will get different rewards?

It's better to go to the exchange and see if you can see some clues from it.

Thinking about it, he directly exited the chat room and opened the exchange.

In the exchange, the most hung is food.

Su Wen flipped through and suddenly saw a person selling a dagger and indicating that he wanted to exchange it for rare items.

And this deal has been marked by more than 100,000 people.

These tokens represent the number of people who want to exchange, but in fact there are more people.

This couldn't help but make him frown, feeling that things were not simple.

Rare items.

Medicines

, materials

, and what else are rare?

Su Wen clicked on this person's information, and the 3 next to the avatar hung there.

"Zhou Lin.

Su Wen read his name once, and then muttered in his heart.

In the survival world, such an important thing as a weapon is sold, could it be that he has

obtained a more powerful weapon? It can't be a gun?!

Su Wen was horrified in his heart, if this person really had a more powerful weapon, then someone else must have also obtained a weapon.

Regardless of whether the guess is right or not, you must be extremely careful the next time you go out.

After thinking for a moment, he exited Zhou Lin's homepage.

There's no need to think about it so much now, let's see if you can find something you need on the exchange.

For the rest of the day, Su Wen stayed on the exchange.

......

"The new institute is about to be refreshed, please get ready for the host.

On the left is the Flesh Research Institute, which contains a large amount of flesh and blood, which has a low risk factor, and can be found in it a section whip, which can be used as a self-defense weapon.

In the middle is the super-radiation research institute, once irradiated, the physical strength will slowly dissipate, and the flesh will gradually fall off, and the blood will not stop, and after three days, the whole person will be turned into a pool of blood, however, there are a large number of alloy plates and wires in this research institute.

On the right is the Ultra-High Temperature Research Institute, which immediately vaporizes and dies painlessly once entered.

Friendly reminder: At the end of the countdown, hyperradiation will enter the laboratory through the door, and if you stay in the laboratory, you will inevitably be irradiated.

It is up to the host to choose which institute to enter.

When Su Wen was sleeping in a daze, he suddenly heard the prompt sound of the system.

He sat up abruptly, quickly coming to his senses, listening carefully to what was going on inside the institute behind the next three refreshed doors.

After he listened, he felt that the whole person was not good.

Nima, you didn't give me a choice! The

middle and right ones, you definitely don't have to think about

it, if you don't go, you can't live! You can't live if you go! You still have no pain in gas, I thank you!

Then you can only choose the left one, but I don't know if there are any materials in it, the Flesh Research Institute...

Is it possible to eat the flesh and blood

in it? If so, then it is barely okay, and when the time comes, we must move out more, hang it on the exchange, and exchange it for other materials, which is not in vain.

There is also a section whip in it, this thing Su Wen has never seen in reality, he has only seen it a few times on the Internet, and his impression of it is better than nothing.

It's a weapon, right

, it's a pity for the materials in the Hyperradiation Research Institute.

Su Wen got up and walked to the terminal, and after taking a look at the remaining number of people as usual, he opened the synthesis prop.

Looking at the dark radiation medicine, he was speechless for a while.

If only we could synthesize radiation drugs now, so that we would not be afraid of the so-called radiation.

sighed, it's the most important thing to find materials to upgrade quickly, and after upgrading, you can unlock more props.

Let's go to the research institute on the left first.

After waiting for a while, the loudspeaker in the room sounded.

"After a minute, everyone is asked to choose whether or not to enter the institute. At

the end of the countdown, Su Wen pushed open the door on the left.

A blood-red room appeared in front of him, and the smell of blood came to his nose.

Su Wen only glanced at it, and immediately felt physiologically uncomfortable.

He thought about what the Flesh Research Institute would look like, thinking it would be a bunch of flesh and blood from unknown creatures on a research bench for people to study.

But I never expected that the whole room was basically wrapped in flesh and blood.

The flesh that wrapped around the wall was still wriggling at this time, and it was covered with white pus, which was very weird, which made Su Wen's head almost shut down.

Looking at the scene in front of him, his throat was sour, and he kept swallowing saliva.

This is stronger than the impact of killing zombies before!!

"Ask the living to leave the laboratory as soon as possible, there are ten seconds left, and the door is about to close." The

sound of the laboratory's announcement sounded again, but Su Wen's feet seemed to be fixed in place.

He didn't dare to think that if someone with a phobia of secrets saw this picture, he would faint here on the spot.

“3。 "

“2。

When there was still a second left in the countdown, Su Wen's heart was horizontal, his teeth were gritted, his eyes were closed, and he walked in with one foot.

With a bang, the door closed automatically.

The flesh and blood under his feet kept squirming, Su Wen endured the discomfort, and immediately raised his feet to find a place where the floor was still exposed and stood.

"Poof..."

A small voice sounded, and Su Wen immediately looked up at the place where the sound came from.

In an instant, he jumped to the side and retched.

“yue。 "

yue!!"

The white white on the wall exploded a few at this point, spewing out sticky pus accompanied by a retching smell.

Fortunately, Su Wen's eyes were quick and flashed to the side, so that he was not splashed on his body.

Su Wen didn't care about the nausea, and hurriedly retracted his neck and hands into his clothes as much as possible to prevent the pus from exploding again and splashing on his skin.

Blinking his dry eyes, comforting himself in his heart, trying not to look at these things, trying to ignore them.

Now the top priority is to find the whip

as soon as possible!! as soon as the time comes, the most important !!thing is to run away immediately

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