What was dragged in was still a zombie wearing a nurse uniform. Shen Feng grabbed the nurse zombie's hands and wrists and followed the same pattern, locking her firmly to the test bed.

Then continue to test.

This virus laboratory has a lot of various stocks, including other virus and bacterial samples.

Although many of them have died, there are still some virus and bacterial samples in the sealed culture medium that are still alive.

Shen Feng took out these samples and injected them into the stone statue virus culture solution one by one to observe the changes and reactions.

At the same time, make an inducer to induce the stone statue virus to mutate.

When doing these things, he wore protective gear all over his body and had stone statue virus treatment medicine at hand.

After all, the origin of this virus is unknown, and it is so active. If a powerful mutant type really emerges, he might even be infected.

Although he has been injected with stone statue virus treatment medicine and has antibodies in his body, he still has to be as careful as possible against viruses created by indescribable and unspeakable beings.

In the process, he also saw the power of the stone statue virus.

Not only is its vitality extremely tenacious, but its attack power is so strong that other viruses and germs are like a bunch of kids in front of the Stone Statue Virus.

There is no one who can fight.

However, this thing itself has another characteristic, that is, it only targets humans.

The reproduction iteration and mutation induction of viruses is a very long process. Even if the stone statue virus is far more active than ordinary viruses, it still takes a certain amount of time.

At this time, the things Shen Feng brought came in handy.

After arranging dozens of petri dishes and performing various types of induction stimulation, Shen Feng took advantage of the cover of night to quietly open the window, climbed out, and headed towards the first floor of the hospital with weapons.

It was still dark outside, and the roars of zombies could be heard faintly in the distance. They sounded one after another very rhythmically, as if a pack of wolves were hunting on the grassland. I didn't know what was happening over there.

Landing on the street, Shen Feng did not dare to stop at all. He quietly entered the hospital again and found the room where the doorman was.

When you push the door open, you will see a zombie standing silently in the darkness, sleeping.

Shen Feng stepped forward and quickly put the barrel of the gun between the zombie's eyes, and pulled the trigger the moment the zombie opened his eyes.

The zombie's head was shot instantly. Shen Feng grabbed the other person's collar to prevent the sound of falling to the ground from attracting other zombies in the hospital, and gently placed the other person on the ground.

Then he quickly checked the entire security room in the dark and found several newspapers on the table, as well as some registers and record books.

As well as a shotgun, a pistol and some bullets.

After all, it is a private hospital in Mexico City, so security is a must, and there are often more than two guards with guns.

After checking the two guns, the shotgun was similar to the one Shen Feng threw away. The silencer he left behind could also be retrofitted to this gun.

Taking all the shotguns and bullets with him, and loading up all the newspapers, registers, and record books, Shen Feng quickly left the security room. This time he was familiar with the road, climbed up the outer wall, and soon came to the virus again. The floor where the laboratory is located.

At this moment, a loud "boom" suddenly came from the darkness in the distance, and fire shot into the sky, followed by "click-click-click" gunshots, piercing the quiet Mexico City!

The fire came from a high-rise building a dozen blocks away. At this time, a certain floor of the dozens-story building began to burn, and in this absolute darkness, it even illuminated the street where Shen Feng was located!

Shen Feng had heard the explosion just now and was quite familiar with it.

That's the sound of grenades and RPGs!

Immediately afterwards, there was a faint melodious sound of gunfire, which was the muffled sound of Bartley's sniper rifle.

There's a firefight going on in that building!

As for what they were fighting with, it was obvious that they must be zombies.

The opponent obviously has plenty of firepower, a lot of heavy weapons, and there should be more than one person.

However, Shen Feng was not optimistic about the opponent's fate at all.

They were trapped in that building. No matter how abundant their weapons were, how long could they hold out in the face of the siege by the zombies?

You know, it's not just the zombies in that building...

On the street below Shen Feng, zombies that were sleeping in the darkness opened their eyes one after another, then roared wildly and ran towards the burning building!

In the surrounding buildings, including the hospital building where Shen Feng was located, many zombies even broke through the windows and rushed out. They fell to the street and were bruised. Then they staggered up and ran towards the gun. Sounds and explosions came from the building.

Looking from a distance, in the darkness in the distance, there are many shadowy figures, their eyes like cats reflecting frightening light, flocking towards the building.

Like a tide surging in the darkness.

Shen Feng was hanging outside the window on the fifth floor of the hospital. The zombies were completely attracted by the sound and fire in the distance and did not notice him.

He himself also held his breath and tried hard to hide his aura.

When the zombies on this street were almost gone, Shen Feng immediately turned over and got in through the window.

After being disinfected in the disinfection isolation room, he returned to the culture room of the virus laboratory again.

Putting down the things in his hands, Shen Feng did not rush to check the newspapers and notebooks. Instead, he came to the window, took out his telescope, and looked at the building in the distance.

At this time, the middle part of this dozens-story building had completely burned, and the flames were still rising upwards. The fire completely illuminated the entire city.

There were tens of thousands of zombies swarming madly below, like a group of tireless ants, climbing directly up the outer wall of the building!

Moreover, more and more zombies are swarming under the building, climbing and stacking on top of each other, like forming a human tower, climbing up like arhats on top of each other!

The zombie at the top had even climbed up to the waist of the building, and completely ignored the pain and climbed directly into the burning area, with the flames blazing all over its body and continuing upward!

This scene made Shen Feng shudder.

Zombies have no sense of pain and only have an obsession to eat humans. Their slight mutations are in line with the uncanny valley theory. For humans, they are completely nightmare creatures.

"bang——"

"boom!"

"Da da da……"

Gunshots and explosions were still coming, and Shen Feng discovered through the telescope that there were several figures on the top of the building, shooting down at the climbing zombies.

These people are very well equipped with weapons and equipment. From time to time they drop some grenades or shoot down a rocket, immediately killing a swarm of zombies.

And that sniper rifle can dismember a bunch of zombies with just one shot.

But there are simply too many zombies, and they are completely unafraid of death. In other words, they have no concept of fear at all. They are still climbing up like a colony of ants.

Behind Shen Feng, the nurse zombie who was tied to the test bed began to struggle wildly, letting out a low roar, apparently attracted by the sounds and firelight outside.

Shen Feng immediately stepped forward and wrapped the mouth, nose and head of the nurse zombie with tape, tied her to the test bed, made a "shh" gesture, and said:

"Be quiet for a moment. If you go out to climb the stairs now, you will either be burned to death, blown to death, or beaten to death. It is too dangerous. It is better to live for a few more days and be killed by me."

Then he returned to the window again and looked towards the building.

I saw that the dozens of zombies climbing at the front were already approaching the rooftop at the top of the building!

These zombies all came through the line of fire, their whole bodies were on fire and their skin was burned away. They looked like evil ghosts crawling out of purgatory, but they were still climbing up.

Their strength is amazing. Occasionally, some zombies fall down from above, but most of them still hold on to the protrusions of the outer wall and keep moving upward, as if they will never tire.

Originally, Shen Feng thought that the people on the rooftop would eventually be burned to death by the fire, but he didn't expect that the corpses had arrived a step earlier.

The seven or eight people on the rooftop were still shooting wildly. There was still white powder floating on the roof. These people were also jumping like crazy. At the same time, there were countless green banknotes blown up by the strong wind. Falling leaves all around, like a rain of fallen leaves.

It seems that they also understand that they are at the end of their rope and have gone completely crazy.

Shen Feng nodded, which was consistent with his previous judgment.

There is obviously only one kind of person who has more advanced heavy weapons than the police in Mexico City.

I just don’t know how these people alerted the zombies and led to their discovery?

The reason why this building caught fire immediately was probably due to their own arrangements made in advance.

More and more zombies crawled over the fire line of the building and reached the roof.

Finally, a few burning zombies turned over and climbed onto the rooftop of the building, jumping towards those people.

At first, they still killed these zombies and even dropped their burning corpses from above. However, later, as more and more zombies climbed up, these people's weapons became unsustainable, and they were finally overwhelmed by the zombies. Roof.

Shen Feng couldn't help but smack his lips and felt a little sorry for these people.

These people should all be immune and will probably be eaten alive by zombies.

Shen Feng turned around and was about to close the curtains. At this moment, he saw a huge fireball suddenly rising from the roof of the building. After a while, a loud noise was heard, and a large number of broken arms and limbs were scattered like goddesses. They were blown up into the sky like flowers and then scattered down, along with a huge amount of US dollars.

Among these severed arms and limbs, there are obviously zombies and human limbs.

Those survivors should have placed explosives in advance and chose to die with the zombies at the last moment.

I don’t know if so many US dollars were accumulated before the catastrophe, or whether they were collected during this apocalypse.

No matter which one it is, it is no longer useful, but it can help them buy a way on the road to death...

The entire top floor of the building has been destroyed, and the flames below continue to burn upward, turning the building into the most dazzling torch in Mexico City.

At this moment, a rhythmic roar suddenly came from the direction of the building. This roar was full of angry and violent emotions, and seemed to be very angry at the stubborn resistance of those humans.

Immediately afterwards, there was another roar that echoed from a distance, and then similar roars came one after another, and you can hear the emotions in them!

Shen Feng couldn't help but look condensed.
Chapter completed!