Zhao Hai looked at the cultivator trapped in the sword array and didn't pay any attention to him. He knew that this was the disadvantage of the sword array. It could trap the enemy but couldn't kill him immediately, so the cultivator could live for a while.
Zhao Hai didn't care. Instead, he shifted his gaze to the dead Tiger-shaped biochemical beast. With a wave of his hand, a mass of black gas enveloped the biochemical beast. However, he frowned after that because the Tiger-shaped biochemical beast didn't turn into an undead creature.
In order to turn a creature into an undead creature, a very important condition was required, and that was the soul. No matter what creature it was, it had a soul. After they died, their soul would still exist on their corpse for a period of time. To turn a dead person into an undead creature, it had to be done before their soul completely dissipated. Otherwise, it was impossible to turn a dead person into an undead creature.
