Zhang Su didn't know if the flames could kill 004, but enhancing combat power was real, and whether 004 truly sensed their presence earlier was uncertain. Retreating was definitely the wise choice!
Humans are fully capable of causing their own downfall, even though Mutated Zombies are insignificant compared to the transformed Zombie 004.
He hoped 004 would ultimately perish along with the zombie horde, otherwise, the whole Qing County could face a great catastrophe!
Zhang Su had already made up his mind that if the Cyan Dragon Corps were slaughtered at a rapid pace, he would take everyone and abandon Celestial Horse Island, escaping to Qin City without a second thought...
As for being blamed for diverting disaster eastwards, when your life is at stake, who cares?
