A week before the spirit beast invasion, Amon sent almost half the members of the Demon Gang and Vicious Faction away from Qishurg City. None of the members knew about Amon's plan, not even Xin Wuming and Gao Lan. He sent them on multiple difficult missions that required at least a month to complete. This was so his force didn't suffer too many casualties.
The only ones who knew about this spirit beast invasion were Amon and the rebels. He conspired with the rebels through Sui Kui to bring about this disaster. He needed the rebels because he needed spirit beasts powerful enough to threaten the Spirit Stage cultivators in this city, like Lao Zen and the others. If the danger posed by the spirit beast invasion was not high enough, the Royal Academy might not mobilize all its forces.
