Zhang Fan and the friendly clone looked at each other, and after a moment, both of them nodded slightly.

Then, the friendly clone said to Zhang Fan: "I'll go up first, there's no danger, come up again."

Zhang Fan didn't say anything.

The friendly clone immediately held a spear and walked up the stairs carefully.

The stairs were about twenty levels and they soon walked up.

After watching for a while, he said to Zhang Fan: "It seems that there is no danger."

Zhang Fan immediately walked up the stairs quickly and soon arrived at the upper floor.

There is still only one passage here, extending all the way to the distance.

Zhang Fan and the friendly clone walked forward carefully along the passage.

Not long after, a metal door appeared in front of the passage.

Zhang Fan could hear the hissing sounds constantly coming from the door.

Obviously, there are zombies here.

He lay in the gap below the door and looked inside, and saw more than twenty zombies inside.

It looks like they are all blood bead zombies.

Just as the two were hesitating whether to enter, another female voice of electronic synthesized came from the communicator on the channel.

"As long as you are a zombie at level 2 or above, your brain has blood nuclei. Your physique determines you. As long as you swallow the blood nuclei, you can improve your strength. Moreover, swallowing the blood nuclei can also reduce the hunger in your abdomen. So, you don't have to eat people."

The friendly zombie heard this and said angrily: "Since you don't have to eat people, why should you force us to eat?"

"This is to test your heart. If your heart is not firm, we will not let you go."

After hearing this, Zhang Fan kicked open the metal door.

The blood bead zombies inside immediately roared and rushed over.

After that sound, Zhang Fan already knew that they had indeed divided the zombies into levels.

These zombies with a little bit of human consciousness are the level 2 zombies they call.

Zhang Fan and his team quickly solved more than ten level 2 zombies inside.

It's still the same as before. Whoever solves the zombie will be the blood core inside it.

The friendly zombie only swallowed four blood cores.

Zhang Fan swallowed ten pieces.

In Zhang Fan's body, the feeling of being about to be promoted is getting stronger and stronger.

But he found that the blood cores of these level 2 zombies could no longer satisfy him.

It seems that the higher the level, the higher the blood core level required.

After eating these blood nuclei, the two continued to walk along the passage.

There is another room in front of them, in which they encounter five level 3 zombies.

Level 3 zombies are zombies with strength similar to the little loli.

They are extremely fast and have extremely strong strength.

Level 3 clones are not their opponents at all.

But now Zhang Fan is already at level 4.

Moreover, he learned to draw his sword and deal with these level 3 zombies, which was simply too easy.

The friendly clone didn't have time to take action.

He split the heads of the five level 3 zombies.

Picking up the five blood beads, Zhang Fan took out one of them and slapped them into his mouth.

The cold feeling came again.

From his stomach, it spreads throughout his body.

Every cell seems to be frozen.

But in this frozen state, the cells seem to be evolving at an extremely fast speed.

Zhang Fan's heart moved: I'm going to be promoted!

Since he was about to be promoted, he would save the remaining four level 3 blood nuclei.

If he is hungry for a long time in the future, he can use these blood nuclei to satisfy his hunger.

Five minutes later, the cold feeling in Zhang Fan's body reached its peak.

At the same time, he suddenly felt his body full of strength.

It's like a punch can destroy the world.

"I've finally been promoted to level 5!"

Zhang Fan said in his heart.

According to the previous practice, starting from level 2, every time you advance to level one, your strength will increase by 500 kilograms.

Then now his power should reach two tons.

How terrifying it would be to have two tons of power.

Even an elephant would probably not be able to bear it under the attack of his two tons of force.

The friendly clone saw that Zhang Fan was light and radiant, and said happily: "You have been promoted to level 5?! That's great!"

Zhang Fan nodded and said, "But it's better to be careful. Keep moving forward."

The friendly clone nodded.

The two continued to move forward.

Half an hour later, they finally arrived at the end of the passage.

This is an office-like lobby.

Behind the highly technologically tech-like floating desk, there was a person sitting.

I saw this man wearing a white uniform.

He is about forty and looks lazy.

He leaned against the chair behind the table.

A bandage was wrapped around his right arm.

Seeing this scene, Zhang Fan suddenly remembered.

"Who are you……"

Before Zhang Fan could finish his words, the man continued: "Laboratory 301, Zombie Keeper. No. 9527."

It turned out that this person was the one who had Zhang Fan crushed his hand bones.

9527 looked down at his right hand wrapped in bandages and said, "This is all thanks to you."

Friendly clone body said: "Don't talk nonsense. We just want to know the truth about all this. Why do we clone us? Why do we want to eat human flesh so much? We can avoid zombie viruses. After we eat the blood core, our level will be increased... Why is all this?"

9527 chuckled twice and said, "The reason why you want to eat human flesh, be immune to zombie viruses, and eat blood nuclei to increase your level is because we inject zombie virus into your bodies."

"Why?"

"Because we want to make you into super warriors. Only by injecting zombie virus can you quickly improve your strength by swallowing blood nuclei, so as to become a powerful super warrior in a short period of time."

"Warrior?"

Zhang Fan sneered: "What the hell is a warrior? Is there such a thing in our world?"

9527 seemed lazy and sat loosely on the chair, saying, "This is no longer the world you remember. In this world, humans only account for a small part. Zombies and other monsters account for a large part. In order to deal with zombies and those monsters, humans use drugs to activate their talent genes and thus become warriors.

However, the cultivation speed of warriors is too slow, and only a few people can become top-notch warriors.

But it is obviously not enough for such a few top-notch warriors to deal with zombies from the outside world.

So we developed this project, using zombie viruses to create super warriors. We are not afraid of virus infection, but also can quickly improve our strength.

As long as you keep eating the blood core, you will definitely become an invincible existence in the future.

So, you are the hope of this world.

But one thing is: after being injected with zombie virus, I feel full of desire for human flesh.

Therefore, we must ensure that you are tenacious and firm in your will.

And you two obviously met the standards.

You are the only two of all 100 clones that succeeded."

When Zhang Fan heard this, his brows frowned.

After a moment, he asked two questions.
Chapter completed!