"If we declare war on the Zhe Family, we'll hold the moral high ground. But if you establish a sect, it's the same as exposing all our forces to the light of day. Besides, establishing a sect involves recruiting disciples. All the great families and sects have their own territories, and they do recruit talented disciples from the Mortal World. That will inevitably lead to conflict and friction. Also, among the disciples, who can guarantee there won't be spies? You can spend a thousand days catching a thief, but not a thousand days defending against one. Ling Xiao, you must think this through!" the High Priest said to Ling Xiao with utmost sincerity.
