Eliminate them to prevent future trouble.
Dongfang Zhao then mulled it over further. "The mysterious expert mentioned in the secret letter might not necessarily be within this world. The Demon-Subduing Division has long speculated that other mysterious entities exist beyond Heaven and Earth. The Demon Evil Clan, for instance, originates from Outer Heaven. That mysterious expert who caused the Mountain Spirit Clan to emerge very likely came from there. He allowed the Mountain Spirit Clan to appear; who knows if there's some ulterior motive? By eliminating the Mountain Spirit Clan, we are merely thwarting his plans and preventing even worse consequences."
