While the Beastman tribe had a sizable military, Zhou Tian was faced with the reality of needing troops in too many places. Also, due to the necessity of deploying troops everywhere, even though Zhou Tian has amassed a large number of Beastmen through his abilities, he constantly felt that his troops were insufficient every time he planned something.
Thus, even though Zhou Tian currently did not pay as much attention to the Beastman tribe as before, he could not possibly stand by and let his enemies slaughter his Beastman subordinates. Ultimately, when he discovered that his enemies were massacring his Beastmen troops in secret, Zhou Tian immediately took action.