It was quite heavy to start, but the poison island girl could feel the palpitating edge on this thick-backed long knife.

"Su Jun, what is this?"

Poison Island believes that with such a huge long knife, Su Zimo will not be able to carry it with him no matter what. And the moment the long knife appeared just now, it seemed to be flying towards her from mid-air.

It's like ...... out of thin air.

"Roaring ——!"

The dull roar made the poison island girl quickly recognize the facts, and there were still two leader-level zombies in existence, which could not allow her to be distracted for a moment.

Although this thick-backed long knife is completely different from the knife used by the Poison Island Guy before, it is completely different from the two styles.

But it gave the poison island a feeling of command.

"Tear ——!"

Unlike the previous knife stuck on the zombie, the poison island boy was surprised to find that this back long knife could leave a deep scar on the zombie's body with just a slight stroke.

Compared with the two, the so-called famous sword of the Warring States period has become a broken copper and iron.

After changing to a new weapon, the poison island man was no longer restrained, and joined forces with Su Zimo to quickly kill the two leader-level zombies.

"Su Jun, what is the name of this knife?"

"Slay the dragon."

"What a domineering name."

The poison island man was startled, and immediately walked to the corpses of the two zombies, pulled it out hard, withdrew his sword, wiped the blood stains on it, and solemnly tied it to his back.

After doing all this, Shi Shiran walked to Su Zimo's side.

"Su Jun, you can continue."

Immediately afterward, the two continued towards the end of the passage.

This passage is not long, but except for the two leader-level zombies that appeared out of nowhere before, it is quite silent, and there is not even the slightest sound.

But neither Poison Island nor Su Zimo relaxed at all.

Soon, the end of the passage came into view.

It was an underground laboratory the size of two volleyball courts, filled with unknown instruments, tools, and broken glass bottles and test tubes.

But right now, it's a mess, as if something has ravaged it.

"Roar! Roar! ”

Several roars in a row, several white shadows, quickly attacked the two of them.

"Retreat."

Seeing this, Su Zimo couldn't help frowning.

Together with the Poison Island Guys, they ran towards the previous road.

However, those zombies did not chase after them, and soon returned to their previous wandering appearance.

"This ......"

Seeing this scene, Su Zimo was a little stunned.

"Su Jun, what should I do?"

The poison island boy was also slightly stunned, the zombies they encountered before, as long as they saw a human figure, they were like sharks smelling blood, but now these zombies are not like this.

It's like there's something more appealing in this underground lab.

"There it is!"

After carefully looking at the layout of the surroundings, Su Zimo smiled slightly, turned his head to the poison island and said, "Since these zombies will not chase them out, then we will lead them to the door one by one, and then break them one by one." ”

"Son, follow me."

The two of them came to the door of the laboratory again.

With their previous experience, this time both of them were cautious, for fear of making the slightest movement.

Soon, one of the zombies was wandering when he spotted the two and quickly pounced on them.

"Do it!"

At that moment, Su Zimo let out a low sigh.

"Roaring ——!"

A few minutes later, with an unwilling roar, the zombie fell to the ground.

As for the other zombies, although they were attracted to them, they stopped just before chasing them to the road.

In the time that followed, the two of them did the same and killed seven or eight zombies.

At this time, Su Zimo also received a prompt from the "big thief system".

"Mission 2, kill 1,000 ordinary zombies, 50 elite zombies, and 10 zombie bosses, completed."

"Hoo ——!"

However, at this moment, Su Zimo and Poison Island were panting and leaning together, recovering the physical strength they had spent before.

More than ten minutes later, the two came to the laboratory again.

This time, nothing suddenly ran out to stop them.

"It's a pity ......"

After carefully looking at everything in the laboratory, Su Zimo couldn't help but show a hint of regret.

Most of the equipment in the laboratory has been scrapped, and I don't know if it was done by those zombies, or to destroy the evidence or something.

As the two deepened, Su Zimo also noticed that there were still many petri dishes in the laboratory.

But at this moment, there is nothing in these petri dishes.

"Wait."

Suddenly, Su Zimo's eyes froze, and he stepped forward quickly.

In front is a computer.

Combined with the surrounding layout and the location of the computer, it is not difficult to see that this computer is most likely the main console in the laboratory.

"I hope I can find something."

While skillfully connecting the power supply, Su Zimo secretly prayed in his heart.

More than ten seconds later, on the computer screen, a boot screen appeared.

It also means that this computer has not been destroyed like the previous instruments, but has been well preserved to the present.

Turning on the computer, Su Zimo began to browse the internal information.

"It's ......"

The poison island guy on the side couldn't help but exclaim.

Although most of the above content is some academic terms, words such as "biochemical", "experimental subject", and "infection" are endless, which is shocking.

Combined with the previous petri dish, it just confirmed Su Zimo's previous guess.

"It seems that this laboratory is really conducting some unknown experiments. I guess these zombies, in the first place, ran out of this laboratory," Su Zimo said.

"But why would those people do that?" Poison Island said.

"For immortality."

A voice that did not belong to the two suddenly sounded.

"Huh?"

The two were shocked.

"Hello."

I saw that on the computer screen, the originally dense documents disappeared, and suddenly, there was an additional figure.

"Are you...... Intelligent life? ”

"The Red Queen?"

Hearing the words of the two, the figure on the screen shook his head with a smile.

"I'm glad you know that, but you're only half right."

"To be exact, I'm supposed to be a certain existence similar to the Red Queen born in this computer."

“……”

Hearing this, Su Zimo didn't know what to say at the moment, and looked at the strange existence in front of him with some curiosity.

In his opinion, all this, although somewhat unexpected, is not unacceptable.

After all, even the big thief system may exist, and an intelligent life similar to the "Red Queen" is nothing.

As for the poison island guys, they have completely fallen into sluggishness.