Shen Feng grabbed the nurse zombie's wrists and concocted her in the same way, locking her firmly on the test bed.

The trial then continued.

The virus lab has a lot of stock, including other virus and bacterial samples.

Although many of them are gone, there are still some viable samples of viruses and bacteria that have been stored in sealed culture mediums.

Shen Feng took out these samples and injected them into the culture medium of the gargoyle virus in turn to observe the changes and reactions.

At the same time, inducers are made to induce the mutation of the gargoyle virus.

While doing this, he wore protective gear all over his body and had a gargoyle virus treatment potion at hand.

After all, the origin of this virus is unknown, and it is so active, if there really is any powerful mutation type, maybe even he will be infected.

Although he has been injected with a gargoyle virus treatment agent and has antibodies in his body, he still has to be as cautious as possible with those viruses created by unspeakable presences.

In the process, he also saw the power of the gargoyle virus.

Not only is its vitality extremely tenacious, but also its attack is so strong that other viruses and germs are simply a group of children in front of the gargoyle.

There is not a single one who can fight.

However, this thing has another characteristic of its own, which is that it is only for humans.

The reproduction iteration and mutation induction of the virus is a very long process, and even if the activity of the gargoyle virus far exceeds that of ordinary viruses, it also takes a certain amount of time.

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

After arranging dozens of petri dishes and carrying out various types of induction stimulation, Shen Feng quietly opened the window under the cover of night, climbed out of the window, and walked towards the first floor of the hospital with his weapon.

It was still dark outside, and the roar of zombies could be faintly heard in the distance, sounding rhythmic one after another, as if the wolves on the grassland were hunting, and I didn't know what was going on over there.

Falling on the street, Shen Feng didn't dare to stop at all, and quietly entered the hospital again and found the room where the doorman was.

When I pushed the door in, I saw a zombie standing silently in the dark, dormant.

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

The zombie was shot in the head instantly, and Shen Feng grabbed the other party's collar to avoid the sound of falling to the ground to attract other zombies in the hospital, and gently put the other party on the ground.

He then quickly checked the entire security room in the dark, finding a few 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's a private hospital in Mexico City, 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 that Shen Feng threw away, and the silencer he left behind could also be attached to this gun.

With all the shotguns and bullets on his body, and all the newspapers, registers, and record books, Shen Feng quickly left the security room, this time with a light car, climbed up along the outer wall, and soon came to the floor where the virus laboratory was located again.

At this moment, a loud "boom" suddenly sounded in the darkness in the distance, and the fire rose into the sky, followed by the sound of "da-da-da" gunshots, which cut through the quiet Mexico City!

The firelight came from a high-rise building more than a dozen blocks away, and at this time, a certain floor of this ten-story building began to burn, and in this absolute darkness, it even illuminated the street where Shen Feng was!

Shen Feng had also heard the explosion just now, and he was quite familiar.

That's the sound of grenades and RPGs!

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

There's a firefight going on in that building!

As for what to fight with, it is naturally self-evident that it must be zombies.

The opponent obviously has a lot of firepower, has 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 of the corpses?

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

On the street below Shen Feng, the zombies that had been dormant in the darkness opened their eyes one after another, and then let out a wild roar and rushed towards the burning building!

In the surrounding buildings, including the hospital building where Shen Feng was, there were even many zombies who rushed out directly through the windows, fell into the street and fell into a blur of flesh and blood, and then staggered up and ran towards the building where the sound of gunshots and explosions came.

From afar, in the darkness in the distance, there were many shadowy figures, their eyes reflecting a terrifying light like felines, and they flocked to the building.

Like a tide surging in the dark.

Shen Feng was hanging outside the windowsill on the fifth floor of the hospital at this time, and the zombies were completely attracted by the sound and firelight in the distance, and they didn't notice him.

He himself held his breath, trying to hide his aura.

When the zombies on this street had almost run away, Shen Feng immediately turned over and got in through the window.

After being sterilized in the sterilization isolation room, he returned to the culture room of the virus lab.

Putting down the things in his hand, Shen Feng did not rush to check the newspaper and record book, but came to the window, took out the binoculars, and looked at the building in the distance.

At this time, the middle of this multi-story building has been completely burned, and the flames are still running upward, and this fire completely illuminates the whole city.

There were tens of thousands of zombies frantically rushing below, as if they were a swarm of tireless ants, and they actually climbed directly up from the outer wall of the building!

Moreover, more and more zombies are pouring to the bottom of the building, climbing and stacking on top of each other, as if forming a human tower, climbing up by stacking Arhats!

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

This scene made Shen Feng shudder a little.

Zombies have no pain, only an obsession to eat humans, and their slight mutations are in line with the uncanny valley theory, which is completely a nightmare creature for humans.

“bang——”

"Boom!"

"Da Da Da ......"

The sound of gunshots and explosions was still coming, and Shen Feng found through the telescope that there were several figures on the roof of the building at this time, and they were constantly shooting down at the climbing zombies.

These people are very well armed and equipped, and from time to time they drop some grenades or shoot a rocket, and immediately shoot down a zombie.

And that sniper rifle can directly dismember a string of zombies with one shot.

But there are so many zombies, and they are completely unafraid of death, or there is no concept of fear at all, and they still keep climbing up like an ant colony.

Behind Shen Feng, the nurse zombie tied to the test bed began to struggle frantically, letting out a low roar from his mouth, obviously attracted by the sound and firelight outside.

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

"Be quiet for a while, if you go out to climb the stairs now, you will either be burned to death or blown up, or killed, it's too dangerous, it's better to live a few more days and be killed by me."

Then he went back to the window and looked at the building.

I saw that the dozens of zombies climbing in front had approached the rooftop of the building at this time!

These zombies all came through the line of fire, their skin burned all over their bodies, and they looked like demons crawling out of purgatory, but they kept going up.

Their strength is amazing, and there are only the occasional zombies that fall from above, but most of them still cling to the protrusions of the outer wall and keep going upward, as if they never get tired.

Originally, Shen Feng thought that those people on the rooftop would eventually be burned to death, but he didn't expect that the corpses would arrive one step earlier.

The seven or eight people on the roof were still shooting wildly, and there was still white powder floating on the roof at this time, and these people were also jumping like crazy, and at the same time, countless green banknotes were blown up by the wind and fell in all directions, 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, this was in line with his previous judgment.

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

I just don't know how these people alarmed the zombies and caused them to be discovered?

The reason why this building caught fire directly should have been arranged in advance by themselves.

More and more zombies crawled through the building's line of fire and reached the roof.

Finally, a few burning zombies turned over and climbed directly onto the roof of the building, and pounced on those people.

At first, they still killed these zombies, and even threw their burning corpses from above, but later, as more and more zombies climbed up, these people's weapons were also unsustainable, and they were finally submerged by the zombies on the roof.

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

These people should be immune, and it is estimated that they will be gnawed alive by zombies.

Shen Feng turned his head and was about to close the curtains, but at this moment, he saw a huge fireball suddenly rising from the roof of the building, and after a while, a loud noise came, and a large number of severed arms and stumps were blown up into the air like scattered flowers of the Heavenly Maiden, and scattered down, accompanied by a huge amount of dollars.

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

Those survivors should have planted the explosives in advance, and chose to die with the zombies at the last minute.

I don't know if these are the dollars that have been accumulated before the cataclysm, or whether they have been collected in these last days.

Either way, it's useless, but you can buy a way for them to go to the underworld......

The top floor of the entire building has been torn down, and the flames below continue to burn upward, turning the building into the brightest torch in all of Mexico City.

At that moment, a rhythmic roar suddenly came from the direction of the building, and this roar was full of angry and furious emotions, as if very angry at the stubborn resistance of the humans.

Immediately afterward, another roar echoed from afar, and then similar roars came and went, and the emotions could be heard from it!

Shen Feng couldn't help but froze.

These roaring zombies have become conscious!?