Yang Gang and the others ran to the square of the military base on the mountain and fired a signal flare every 30 minutes.

After the third flare was fired, a helicopter finally arrived in their direction.

After the helicopter stopped in the square of the military base, Yang Gang first got on the plane with his glasses, and then walked on the plane with a black briefcase at the end.

As the plane took off, the entire military base was left with only countless zombies and 2 mutant monster corpses and a silent dead silence.

The helicopter arrived at the headquarters in Chengdu, and the medical staff who had been waiting there for a long time first carried the badly injured glasses onto a stretcher and pushed them into the operating room.

Yang Gang handed the black briefcase in his hand to Minister Wang, and said to Minister Wang: "Yang Gang, the leader of the second squad of the first battalion of the wolf warrior, has successfully completed the task assigned by the leader!"

"Good! Good! Good! Thank you for your hard work, squad leader Yang. Minister Wang returned to Yang Gang.

The minister saw that Yang Gang was missing the madman and Zhao Xin by his side, so he didn't say anything, and approached and patted Yang Gang's shoulder, his eyes revealing sadness and sympathy.

Back in the dormitory, Yang Gang first took a comfortable bath, and then dragged his tired body to lie on the bed.

As soon as he closed his eyes, the picture of Zhao Xin being torn apart by the mutant monster kept coming to Yang Gang's mind, and that shocking and unforgettable scene may be a lingering shadow in Yang Gang's life.

No one knew how those monsters had mutated, and everyone was terrified when they first saw them. And this secret is in the experimental monitoring room of the military base.

Because Yang Gang and their purpose were clear, they blindly searched for the briefcase but ignored the terrifying scene that happened on the computer screen in the monitoring room.

It turned out that many biological experts were protected in the military base, and Dr. Fu and the others were also protected by the troops and escorted back to the military base.

The zombie virus outside the military base broke out too quickly, and Dr. Fu had to stay here and wait for Chengdu to rescue.

And in the laboratory at the military base, several scientists are working on zombie vaccines, and they do not have enough equipment and experience to conduct experiments on mice.

They have developed a serum, and this serum has certain antibodies to the zombie virus, generally speaking, as long as the blood of a normal person is touched by the zombie virus, it will be assimilated by the zombie virus after a while.

The serum developed in the laboratory showed no signs of assimilation by the zombie virus, and in the experiment of the mice, the mice were not infected by the zombie virus.

This strengthened the confidence of scientists to rush to conduct human experiments.

And they ignored many necessary conditions, so they directly injected the zombie virus vaccine into the human body, and the experimental personnel did not have any adverse reactions at the beginning.

Just when everyone thought that the serum was successfully developed, an accident happened.

This serum seems to only have a certain inhibitory effect on the zombie virus, and over time, the continuous evolution of the virus will devour the serum in the experimenter's body.

And because of various genetic mutations in the serum and the infection of the zombie virus, it led to the birth of these 3 monsters.

Since the mutant soldiers have become uncontrollable, they have killed everyone in the lab, including Dr. Fu.

The soldiers who escaped after being infected infected the zombie virus to other soldiers, and in this way, the entire military base was completely destroyed by the virus. Turned into a zombie-infested military base.

It was another sleepless night, Yang Gang looked at the starry sky outside the window, how many unknown secrets were still hidden in the stars?