C42 The Dark(1)
The Hholy Martial Hall was considered a legitimate sect, and it didn't allow any other sects to exist. Anyone who was involved in the spiritual worship and the competition for faith was sentenced to be a heretic.
Such heretics were basically the forces under the Realm Master of other worlds that infiltrated here. Naturally, the Heavenly Profound Realm was no match for the Hholy Martial Hall