The losses from this internal civil war were, to the Beastman clan, no big deal. Although, if Zhou Tian and his forces had intended to cause destruction, it wouldn't have been a difficult task for them to ruin an entire continent. However, in this combat, neither Zhou Tian nor his enemies deliberately sought to destroy the environment, and with Zhou Tian's intentional guidance, though the battle was bitterly fought according to the outcome, the actual damage to the Beastman Territory was not very extensive.
What truly required Zhou Tian's attention were only the losses of his subordinate bosses.