After a hard battle, surrounded by the zombies, they finally survived. After a short cheering, they quickly cleaned up the bodies covered with roads, and then released the defense circle surrounded by cars.

"Little brother, if you hadn't helped us this time, I'm afraid we would all have to fold here. We can't repay our help!" Cui Jian, with a pale face, stretched out his right hand to Duan Fei and said sincerely.

He was physically exhausted and so weak that he needed help to stand firm, but his face was always filled with a happy smile.

"My name is Duan Fei. You should be the escort of the shelter!" Duan Fei smiled and shook hands with Cui Jian.

"Do you know who we are?" After hearing Duan Fei's words, Cui Jian was slightly stunned, and a look of doubt flashed in his eyes.

Duan Fei smiled, nodded and said, "yes, in fact, I'm not alone. I'm accompanied by a team of soldiers like you. Their captain is Cao Silong. I think you should know him! But just now I came alone, and they hid not far away."

"Of course I know Lao Cao!" As soon as the voice fell, Cui Jian exclaimed with surprise,

Cao Silong is one of his few good friends in the army. It is undoubtedly a surprise to meet Cao Silong here.

Looking at Cui Jian's surprised look on his face, Duan Fei smiled faintly, and then slowly told the whole story.

From their encounter with Cao slong besieged by zombies, to their assassination, and finally they learned about the accident of the guard, Duan Fei was simple and concise, and soon finished the story.

Listening to Duan Fei's words, Cui Jian suddenly felt a gloomy look on his face.

"That's true. It's really a coincidence, but you said that someone came to assassinate Lao CaO on the way. Is it true?"

"Yes, if you don't believe it, ask him yourself when they come." Duan Fei nodded and said.

After saying that, Cui Jian nodded and a faint look of anger flashed in his eyes.

The struggle between commander Luo and Guan Zhonghua has long been no secret among them, but what he didn't expect is that the struggle for power in the army has reached such a point. Now even important military officials such as Cao Silong dare to brazenly design assassinations. He can't imagine that it will develop according to the current trend, What the army will look like in the end.

But these thoughts just poured out in his heart, and Cui Jian didn't say it.

After saying a few more polite words, Cui Jian hurried back to sort out the remaining materials, vehicles and place those important scientists. Duan Fei also took advantage of this time to bring Cao slong and them back.

Before long, Cao Silong and Cui Jian joined together under the leadership of Duan Fei. The two teams met. Everyone was overjoyed. It was happier than anything to meet their comrades in arms under such circumstances.

But when Duan flew back, the scene in front of him immediately attracted his attention.

I saw that most of the zombies scattered on the ground had been gathered together. Under the command of an old man in a white coat and gray hair, several soldiers were using a dagger to cut open the bodies of the three mutant zombies, as if they were looking for something inside.

Beside the gray haired old man, there stood a tall, cold looking beauty with a tray in her hand and a transparent crystal object emitting light fluorescence.

Seeing this crystalline object, Duan Fei's eyes coagulated and a look of surprise flashed in his eyes.

"Gene nucleus!"

Gene nucleus is a special energy crystal condensed in the zombie after the energy emitted by the source species is collected. It is also the source of the ability of mutant zombies.

In later generations, it has been a consensus that there is a gene nucleus in the mutant zombie, but now the Apocalypse has just passed, and human beings are not aware of the existence of the gene nucleus at all. However, from the current situation, the old man obviously has found the existence of the gene nucleus. What's the matter?

When Duan Fei was confused, the soldiers had dissected the three mutant zombies. According to the current situation, they didn't seem to find what they thought.

Quietly looking at the three strangely shaped bodies in front of him, a look of doubt flashed in the eyes of the gray haired old man.

According to his research, there should be such a transparent crystal in the bodies of the three mutated zombies, but when he dissected the bodies of the three zombies, he found the crystal in only one body, while the other two found nothing at all.

This is simply impossible!

However, the picture in front of him made him have to believe that there was no crystal he wanted in the other two bodies.

"Teacher!" Looking at the tangled look on the old man's face, the tall beauty beside him couldn't help shouting.

Hearing the voice of his students, the old man sighed and said, "it seems that I still think it's too simple. This special energy body is a wonderful thing. My previous idea should be wrong!"

With that, the old man shook his head and left here slowly with his hands on his back.

The old man is actually a top scientist. After the Apocalypse broke out, he devoted himself to the research of this virus in order to save mankind.

Under the protection of students, during the period of revelation, he hid in the basement of Qinchuan University and did a lot of research in just a few days.

At the beginning, no matter how hard he tried, he was at a loss for the virus. He never thought of an effective method to treat and restrain the virus until the emergence of mutant zombies.

After the apocalypse, a test zombie he captured suddenly mutated. Later, he found this special energy crystal from this mutated zombie, and from this crystal, he was pleasantly surprised to find the possibility of restraining the virus.

He was overjoyed by this discovery, and then he fully invested in the research of this energy crystal. In the next research, he found that this energy crystal generally appears in the bodies of those mutant zombies with ability, so this scene appeared in front of him.

Later, his students contacted the army by radio. After consultation with the army, they decided to leave Qinchuan University and go to the army.

After all, although they are relatively safe in the underground research room of Qinchuan University, they are far less than the protection of the army. Moreover, the location of Qinchuan university is close to the city center. In case they are found one day, he has no possibility of survival, so he chooses to go to the shelter.

The absence of energy crystals made the old man feel depressed for a moment. He thought his research was wrong. There was such a crystal conclusion in each mutant zombie, which was actually wrong.

If Duan Fei knew what was in the mind of the old scientist, Duan Fei would be a little embarrassed.

In fact, the old man, his conclusion is correct. There is such an energy crystal in every mutant zombie. Gene nucleus is the fundamental reason for their mutation and evolution. Without the formation of gene nucleus, zombies will not mutate.

However, in the battle just now, because of Duan Fei's ability, the mutant zombie with electrical power and the last mutant zombie with crazy power had their gene nuclei swallowed by Duan Fei. Therefore, they only found the gene nucleus in the mutant zombie killed by Cui Jian, and found nothing in the other two mutant zombies.

After collecting the collected gene, accompanied by several soldiers of Cui Jianhe, Duan Fei and Cao slong met with these scientists.

"Old Jiang, this is Cao Silong, a lieutenant of the army. This is brother Duan feiduan, who saved all of us..." Cui Jian introduced the old man patiently while pointing to us.

"Hello, Hello!"

In Cui Jian's introduction, the old scientist also greeted everyone with a smile. However, when facing Duan Fei, a faint look of gratitude and admiration flashed in the eyes of the old scientist.

The picture of Duan Fei fighting with those zombies is still vivid, and a powerful figure has been deeply reflected in the scientist's heart. Although he is a top biologist, he is also an ordinary human. He knows how to be in awe of a strong man like Duan Fei.

"Thanks to brother Duan's help, otherwise, my old bone will be explained here!" Then the old scientist laughed, held Duan Fei's right hand tightly and said, "Hello, my Jiang Tianxin!"

"What, Jiang Tianxin!"

At the moment of hearing the voice of the old scientist, Duan Fei's body trembled fiercely, and a look of incomparable shock flashed in his eyes.

"Jiang Tianxin, Professor Jiang! So it is!"

Duan Fei muttered to himself, and finally showed a look of enlightenment in his eyes.