Chen Tinghan paused for a moment, then asked, "I heard you can still contact your superiors? Who are your superiors?"

Wu Mengzhi said: "We are just a small regimental headquarters, and our superior is the divisional headquarters."

Chen Tinghan asked, "Do you know where it is?"

Wu Mengzhi shook his head.

Chen Tinghan looked at Yang Fei again. This guy was a four-star general.

Yang Fei also shook his head and said, "I know two division-level headquarters, but I don't know which one Commander Ye is in."

The Commander Ye he was talking about was a six-star general named Ye Wuya, a young general.

The reason he was able to upgrade so quickly, besides having the ability, was that he had connections in the court.

Chen Tinghan asked, "By the way, do you have any research on zombies? Do you know how this biochemical crisis came about?"

He remembered that there was a scientific research department here.

"There is indeed some information stored in the archives..."

The group of four soon arrived at the archives room.

Chen Tinghan came into contact with a Level 1 confidential file.

It is said that the origin of the original zombie virus is unknown.

Codenamed SFO or Alpha, it is not as contagious and cannot be spread through the air.

However, its toxicity is extremely strong.

Once infected, it will turn into a terrifying monster that only knows how to kill.

Even, in order to deal with this virus monster, secret nuclear weapons were launched and the truth was concealed from the public.

Later, the virus evolved into the second generation, codenamed PRG or Beta, and the monsters infected by this generation were weaker.

Now it is the fourth generation, code-named Delta Zombie Virus.

The characteristics of this generation are that they are terribly contagious and also have some atavistic features.