The entire fourth floor, except for the butterfly girl, all the experimental products were released, looking congested and terrifying.

The first to rush in front was a leopard man, his movements swift and violent, rushing in the direction of Qi Qi.

Yu Xi and Qi Qi were forced into the cramped corner, which was a bit tricky.

The entire corridor was in a long and narrow state, all the experimental objects were concentrated in the corners, and the cracks in the floor were getting bigger and bigger.

Leopard man, the unidentified combination of human and snake, huge tail and sharp claws, Yu Xi flexibly shuttled through the gap, Qi Qi's body looked extremely petite against the mutated experimental product. She turned over the experimental product. On his body, the ice skates condensed in his palms slashed towards the fragile part of the experimental product.

Yu Xi’s call was blocked, and the surrounding zombies were walking in the direction of the difficult super-institute. Most of the zombies are zombies that have evolved in the second and third levels. Their speed has been improved and is better than that of ordinary people. Speed, but there is a problem, the code lock of the institute.

The code lock of the research institute cannot be forcibly broken, otherwise the whole research institute will fall into a state of alert attack, which will be more troublesome then, so Yu Xi needs to go back to the first floor to open the code lock, but the current situation...

They are at the end of the corridor, the elevator is at the other end, and there is no other passage, at least in Yu Xi's opinion.

All kinds of strange monsters attacked desperately, and the butterfly girl shrank in the room, lowering her head.

With the loud sound, a big hole was broken in the floor that was hard to resist the attack of huge forces, and Yu Xi and Qi Qi fell.

The woman looked at a big hole in the hallway, curled her lips, turned and walked to the other side, pressed the switch, and entered the central control room.

The third floor is the territory of mutant plants.

This is not very different from the room on the upper floor. The difference is that the room is larger and the storeroom is made of completely transparent materials. Yu Xi looked at the contents and felt that his eyelids jumped.

Is the aesthetics of the people in the institute so strange?

[The host is too much for me. As a system with three views and aesthetics, it is really ugly, silently mosaic, and the host needs to call me! 】

There is a huge plant in the center of each room. The one facing Yu Xi is green, like an enlarged shrub, not trees and vines entangled. The most disgusting thing is not this, but its state. A human figure can be seen in the blur.

The two legs became the root system, and the two hands became curved and spreading vines. The head seemed to be broken apart. The whole body was entangled with green things. It could be said that the whole body was entangled with green things. Sojourn the seeds of the vine, the whole body is the culture medium, but it seems that the vine becomes a human form, anyway, it is very disgusting.

With a very soft sound, the glass door was opened.

There was no movement on the upper floor. The strangely shaped four-story experimental objects seemed to be shut back. They looked up empty holes, and you could directly see the top floor of the institute, the same pale lights and walls.

Yu Xi pulled Qi Qi to hide, and the thick vines plunged straight into the wall like a hard weapon.

All the plants on the third floor began to move. The vines interlaced and shot from various places. The soft vines wanted to entangle Qi Qi and Yu Xi's hands and feet, restricting their movements.

In a limited space, the lethality of the plants on the third floor is even worse than the experimental products on the fourth floor.

Seeing the moving plants, the impact is quite big.

The plant that Yu Xi saw standing in front of them should be the boss of this layer, a piranha.

It's like an ordinary piranha that has been enlarged several times. The corridor between the third floor and every fourth is four meters in height, and the height of this piranha just reaches the end, and it looks unusually huge.

Its teeth are sharp, and it looks even more awe-inspiring under the shining of the white light.

There are overwhelming vines interspersed, and Yu Xi has the illusion of an adventure in the tropical jungle. The entire corridor is interspersed with vines, and it seems that moving is laborious.

Qiqi's feet stepped on the vine, and the ice skates cut towards the middle of the piranha. The branch seemed hard, but when Qiqi's ice skates were against her branches, the soft slime cut the ice skates. Absorbed, Qi Qi released his hand, allowing the ice skates to melt into water.

Yu Xi dealt with other experimental items, those all-pervasive sticky branches and leaves that wanted to wrap her wrists were particularly troublesome, and they could regenerate if they were cut off.

Those slimy juices should have a paralyzing effect, but Yu Xi's body is special, and he won't be unconscious if he is entangled.

But the sticky and nauseous feeling and the unknown overly strong scent shocked her already very insensitive sense of smell.

Qi Qi is concentrating on the most difficult-looking piranha. Although the body of the piranha is huge, its movements are very flexible. Its root system is huge, its branches move softly, and its sharp teeth keep moving towards Qi Qi. Bite.

"Qiqi, go to the elevator, we go downstairs."

Yu Xi felt that her big zombie brothers were coming, but they were blocked by the door and couldn't get in with bang bang.

Yu Xi exploded with an ice element ability, and the entire corridor was frozen. Yu Xi's original pale face was even paler. This was only temporary, and he needed to leave quickly.

Qi Qi nodded, and took Yu Xi's hand to jump directly across the intertwined root system, reaching the elevator entrance and going down to the first floor from the third floor.

The elevator that was originally on was instantly dimmed, Qi Qi and Yu Xi flashed out when the elevator door was about to close, and the elevator stopped running.

Qi Qi and Yu Xi rushed to the door immediately and opened the code lock.

The door was opened, Yu Xi pulled Qi Qi back, and a large wave of zombies with mutilated limbs poured in.

The women in the central control room thought they were going to escape and turned on the lockdown mode.

The gate was closed, and most of the zombies were blocked outside.

The door of the experiment product on the first floor was opened silently. Their door was completely closed. Yu Xi could not see it before, but now he sees it.

The general experiment in Qiqikou looks terrible.

The difference between the mutant plant on the third floor and the experimental product on the fourth floor is not one or two points. They maintain the posture of an animal, and compared to the fourth floor, they look like defective products.

"There is something worse than them. It is the initial experiment. It is on the negative first floor, but it is estimated that it has been wiped out."

Those sent to the negative first floor are generally incomplete experimental items to be killed.

Bizarre experimental objects rushed towards them. Yu Xi controlled the zombies to fight with them. The zombies who could only eat without thinking were entangled with the experimental objects who also had no wisdom but only knew brute force attack. The scene was very bloody.

The elevator has been disabled, but they must go back to the fourth floor and enter the central control room.

Qi Qi moved his hands, squeezing his fists and thinking.

The width of the corridor on the first and second floors is only about two meters, which is one-half of the third and fourth floors.

She jumped up, stepped on the zombies and experimental objects, and hit the ceiling with her fists.

Each floor group of the institute uses different metal materials. The tightly guarded fourth floor has the strongest defensive force, and the lower it goes, the lower it is.

Qi Qi didn't take much effort to penetrate the ceiling through a large hole, through which the second floor ceiling was seen.

When Qi Qi broke open the ceiling, Yu Xixin's ice cubes condensed the ice ladder, Qi Qi pulled Yu Xi and jumped quickly to the second floor.

The second floor is the area of ​​aquatic animals.

Yu Xi saw the water in the translucent wall, and the half-man, half-fish, but not a mermaid, who stayed in it leisurely.

The woman did not open the door of the experiment product on this floor. Some of the experiment products on the second floor are very capable, but the defects are very obvious. They are aquatic, and their movement will be restricted if they leave the water.

The Qiqi concocted through the second and third barriers. This time, before Yu Xi set up the ice ladder, and the vines said some cracks attacked, Yu Xi grabbed the vines and pulled Qiqi with one hand, and was thrown three times by the vine. building.

The ice before Yu Xi had been in contact. Those ice cubes melted into water flowing on the ground. Yu Xi and the others returned to the third floor again, facing these crazy plants.

These vines are more clingy and more difficult to deal with than before. Qi Qi slashed and killed the entangled vines with ease, and Yu Xi was also looking for the fragile place of the plants.

The low muffled grunt remembered in the air that Qi Qimeng, who had been fighting with the piranha, turned around and saw the scene that made her crazy.

The hard vine pierced Yu Xi's limbs, as if nailed to the wall.

Yu Xi lowered his head. Strangely, there was no trace of blood flowing out of Yu Xi's wound.

"Sisi!"

Qi Qi didn't know what that feeling was, but seeing Yu Xi like this, she had only one thought in her heart, destruction.

"Really embarrassed."

Yu Xi raised her head, twitched the corners of her mouth, and looked at the scurrying vines with a contemptuous expression.

She raised her hand, and the vine passed through her wrist, which is not something that humans can do.

Bingblade cut open the vines, Yu Xi's hands were liberated, she inadvertently removed the broken branches, and the two wounds on her hands looked shocking.

Yu Xi used an ice blade to cut the thick vine nailed to his calf, and the ice-type ability followed the vine to freeze the experimental product all the way.

Yu Xi's body is no better than Qiqi, and can be repaired quickly. Her repair is slow and takes a long time.

The world in front of him was blood red, and Qi Qi's eyes were only injured Yu Xi, and a trembling howl sounded, and Yu Xi looked at Qi Qi whose eyes had turned red.

Qi Qi has changed.

They are all a combination of animals and humans, the difference is only the perfection of genes and the ability to repair hidden evolution.

Qi Qi is the best among the experimental products, and her complete form is rarely seen.

Qi Qi is a werewolf.

Qi Qi's originally white and slender fingers were transformed into wolf-like claws, her silver-gray ears were erected on her head, her eyes were red, and her pointed fangs protruded, making her look very aggressive.

The Qi Qi ability in the complete state was three times the previous one, and the sharp claws directly tore the piranha, dividing the body into two halves.

Qi Qi carefully hugged Yu Xi with both hands, and then jumped to the fourth floor with the strength of the wall and the agile nature of the wolf.