After killing the level 4 mutant rat, Yun Ye pulled out his long knife and prepared to go to other floors.

The mutant rat has always been a social animal, maybe this mutant rat is a sentry, and now killing it himself will inevitably attract the attention of the mutant rat group inside, and maybe it will go up in a nest.

If the mutant rats inside were all of the same level as this mutant rat, then Yun Ye would not have time to cry by then.

Therefore, Yun Ye drew his sword without hesitation and left, without stopping at this floor for a moment.

Even though Yun Ye's reaction was already fast, there was still a sharp squeak around him.

The first thing that caught Yun Ye's sight was a pair of blood-red eyes the size of a dragon's eye, and those blood-red eyes were full of negative emotions such as tyranny, murder, and mania.

Like blood-red lanterns, they kept flickering in front of Yun Ye.

Behind them, they are the size of an adult earth dog, with a body like a shuttle and hair like thorns.

"Mutant, level 4."

"Mutant, level 3."

"Mutant, level 3."

“……”

Run!

Without the slightest hesitation, Yun Ye turned his head and ran.

Just kidding, the mutant rats here are all at least level 3, and besides, there are only two dozen mutants here, and there are mutant rats that are constantly pouring out from the depths of the floor, and there must be higher-level mutant rats in the depths that have not appeared.

Yun Ye wailed, did I stab the rat's nest? Do you want to be so unlucky?

Slander is slander, Yun Ye's footsteps are not slow at all, he runs so fast, and he ran out more than ten meters in the blink of an eye.

"Squeak~~!"

A level 4 mutant rat led by him let out a sharp scream, and the rat swarm rushed towards Yun Ye who fled like a black tide.

The momentum was mighty, the squeaks continued, Yun Ye ran in front of him, and the mutant rats chased behind him with all their might.

Running to the top of the stairs, Yun Ye stopped his desire to run down and glanced at the group of mutant rats chasing behind him.

No, you can't just run back, you'll lure the rats back.

If these mutant rats were returned, Yun Ye didn't dare to imagine what kind of tragedy it would cause.

The only thing that can be expected is that the fighters of the camp will definitely be killed and wounded a large part.

He glanced at the passage leading upstairs, gritted his teeth, and ran up without hesitation.

Not only that, Yun Ye was still yelling while running, and he was slapping the steel guardrail with the blade like a madman.

"Bell...... Clang...... Clang...... Clang......! ”

Between the blade and the steel guardrail, there was a crisp and piercing sound of metal clashing.

It's so loud that I can hear it all over the stairwell.

"Roar ......!" The first humanoid mutant appeared in front of Yun Ye to block the way.

"Mutant, level 3."

Yun Ye was not surprised, and the appearance of a mutant showed that his method had worked.

Like a disarmed cannonball, Yun Ye, who was sprinting with all his might, stepped on the mutant's abdomen, and the huge force coming from his foot made the mutant stand unsteadily, and he couldn't help but fly backwards behind him.

With a bang, Yun Ye's body wrapped around the humanoid mutant slammed into the wall, and the mutant was suddenly knocked to pieces.

Without the slightest hesitation, the mutant's head flew up with the blade, and a large amount of blood sprayed from its neck.

Listening to the sound of hitting and shaking from above, as well as the roar of the mutants, and skimming the group of mutant rats chasing below, Yun Ye secretly moved, and then got into the fire door and entered the floor.

As soon as he entered the floor, Yun Ye was face to face with the dozens of mutants on this floor.

The cruel and bloodthirsty gaze was tightly nailed to Yun Ye's body.

Yun Ye looked at the faces of the dozens of mutant beings and froze for a moment, then hesitantly raised a hand, and shook his palm at them with a dry smile, "Hey...... Hi ......"

"Roar ......!" In response to Yun Ye, there were roars and hideous figures rushing towards Yun Ye.

Yun Ye's color changed, damn! Do you want to be so ruthless?

I'm kind enough to greet you, but you actually want to eat me?

In that case, don't blame me for being ruthless!

Yun Ye clenched the long knife, his eyes were cold, and he looked like he was going to fight it to the end.

However, when he caught a glimpse of a mutant rat rushing out of the staircase, he immediately pointed at the humanoid mutants and yelled at the mutant rat, "Big brother, they are the ones who bullied me!" ”

Then he rushed to a small room next to him with lightning speed.

Mutant rats: ???

What is this prey roaring here?

It's just that it didn't have time to make it think about it too much, and it saw Yun Ye rushing into a room, and seeing this situation, it didn't hesitate to chase after Yun Ye.

The actions of the mutant rats directly angered the humanoid mutants, good guys, snatching our prey in front of us, are you tired of being crooked?

As a result, the enraged humanoid mutants pounced directly on the mutant rat, wanting to deal with it first.

The mutant rat who just caught up saw this, good guy, you actually have dozens of people besieging one of our companions, really don't you die if you can't do it?

So, those mutant rats also joined the warband.

Click, bones shattered, blood splattered, hair flying. The two fought together, but the enemies were very angry when they met.

"Squeak ......!"

"Roar, roar, roar, ......!"

For a moment, the floor was filled with the roars of humanoid mutants and the shrill screams of mutant rats.

Yun Ye looked at the bloody scene outside through the gap, and couldn't help but smash his mouth and secretly admit himself.

These guys are not vain at all, one is more brutal than the other, and one is more ferocious than the other.

Of course, have you ever seen the dry frame of a raging beast?

Although these humanoid mutants and mutant rats cannot be regarded as beasts, because of the virus, they have lost their original sanity, and it has also affected their minds, making them even more brutal, which is no different from those angry beasts.

Yun Ye saw that his goal had been achieved, and he was ready to withdraw.

Although this scene looks enjoyable, one carelessness is enough to kill.

So, it's better to slip away.

Fortunately, most of the rooms on this floor are connected, if not connected, but they are only separated by a glass wall, but most of those glasses have been shattered to the ground.

Yun Ye was like this, hunched and hidden behind various desks or piled up debris, and cautiously moved forward.

It is like a little mouse, trying not to make any noise, trying not to be discovered by the "cat boss".

It didn't take long for Yun Ye to gradually move away from the place where mutant rats and humanoid mutants were fighting.

Seeing that Yun Ye was temporarily out of danger, the gray old man in Yun Ye's mind couldn't help but laugh and said, "Little mouse, I said that you are yin enough, and you actually came up with this way to get out." ”

Yun Ye replied angrily in his heart, "Can this be called yin?" This is called the rational use and development of human wisdom. ”

“…… Commonly known as old YB. ”

“……”

Yun Ye was speechless, this guy is really getting worse and worse, if he didn't have a substance, Yun Ye would have done something harmful to the physical and mental health of the gray old man.

After looking around, he found that there were no mutants around, and it seemed that they should have been attracted by the mutant rats, so Yun Ye slowly stood up.

He showed off to the gray old man unwillingly, "The gray old man, do you see it, this is called the brain." As he spoke, Yun Ye also tapped his temples with his fingertips quite proudly.

"Hehe, Xiao Yezi, you're going to be slapped in the face later, do you believe it?" The gray old sneered, looking like you kid would definitely have an accident.

Yun Ye sneered twice, what he had seen around here was enough to confirm that there were no mutants at all, and there was no place nearby for mutants to hide.

It's just that as soon as he took a step, the alarm in his heart soared, and an indescribable sense of crisis spread throughout Yun Ye's body.

A blood-red light came from far to near, and the distance of tens of meters was only in the blink of an eye.

The strong wind blew in his face, and a sharp blade pierced out from the blood-red light, straight to Yun Ye's heart.

Yun Ye was startled, without the slightest hesitation, and pounced to the side.

One rolled to the ground, and with a crisp knife sound, the long knife on his waist had appeared in his right hand.

I saw that where Yun Ye had stood before, a blood-red mutant was standing there, and an arm like a sickle still maintained the appearance of a stabbing out.

"Hey, hey, what's going on, Xiao Yezi, I said you were going to be slapped in the face, right?" In his brain, the gray old man's merciless old mockery sounded.

Yun Ye was speechless, now was not the time to argue with the gray elder, his eyes were fixed on the mutant that suddenly appeared in front of him.

The mutant is humanoid, with a shriveled and slender body that resembles a bamboo pole. The skin is wrinkled, and the whole body is an eerie blood red.

The left hand is a claw, with five finger bones like spikes, and the left hand is a knife, and the palm of half of the arm is missing, and it is transformed into a sickle that looks like a crescent.

"Mutant, level 6."

Level 6? It's the same level as yourself.

Yun Ye's eyes were slightly gloomy, and from the speed at which the mutant erupted just now, it could be seen that this mutant was not easy to deal with.

However, the mutants that are difficult to deal with get more experience, don't they?

Yun Ye couldn't help but lick his dry lips, the experience of this mutant, he had settled!

Kicking the ground with both feet, Yun Ye suddenly burst out with extraordinary agility and made a mighty sound.

At a distance of several meters, a horizontal slash, like black lightning, slashed at the head of the mutant with a sharp intent.

Yun Ye's eyes narrowed slightly, looking at the direction of the mutant that was radiating a bright light

The mutant stood still as if unaware.

Looking at the appearance of the mutant, Yun Ye always felt that something was wrong, but now that he was ready to fly, he had to send it.

Even if you already notice that something is wrong, you can only cut it down.

However, just as Yun Ye was about to slash at the mutant's neck, the mutant turned his head violently......