Jiang Yi had examined many zombie soldiers before and was aware that their bodies were surrounded by a black aura. He didn't think much at the beginning and thought it was normal to have a black aura around zombies. Without the black aura, they looked less like zombies.
Now, he understood that the dead were dead; how could they have a black aura? If it was to appear scarier, these zombies might as well look more horrible such as having blood or pus.
Besides, the black aura could attack the living and diminish one's body and soul spirit. Thus, there was something wrong with the black aura, which was definitely the key to control the zombie soldiers.
After looking into them carefully, he finally realized the problem. These black auras didn't come from the bodies of the zombie soldiers. Instead, they were emitted from the soul spirit body in the zombies' heads.
The problem was…!
