The task itself is to clear out all the ghosts, and zombies are just one type of ghost, only in a different form.
Their killing of zombies would disturb the Grey Mist, then be besieged by the Boss leading to failure, so the biggest challenge is to either clear all zombies in an instant or do so without disturbing the Grey Mist.
Currently, they are choosing the former, opting for a one-wave strategy.
"It should be ending soon. With the concealment method I bestowed on him, the Grey Mist won't be able to perceive him at all." Gu Shanhai glanced into the distance once more.
The Grand Heaven-tier certainly isn't in danger, and Gu Shanhai still needs him to stall the Corpse King.
He could kill the Corpse King and the Grey Mist in one move, but why make such a big show?
There's no benefit or profit from it; instead, it would bring unnecessary trouble.
