"Beastman Archers have a limited number of arrow shafts; they've all been used up in the previous attack. If they want to carry out a similar attack, it'll take a whole day to refresh and generate new arrow shafts." Zhou Tian also wanted to utilize the Beastman Archers, but as a lower-level monster, how could they possibly possess such a BUG-like attack method? While Zhou Tian's command could maximize their attack power, any ability glitches they might have were patched up once they evolved.
Zhou Tian's explanation was not what the group of monsters had hoped to hear. Upon knowledge that the attack that previously suppressed the undead monsters wouldn't recur for another day, their morale plummeted sharply. For a moment, they felt the undead monsters were even harder to deal with.