The Demon Clan's rampage in Xiniuhe Continent wasn't a matter of strength, but rather the result of Spiritual Mountain's deliberate indulgence.
As for the other three major continents, Beijulu Continent was the main base of the Demon Clan, with unfathomable strength.
Nanbuzhan Continent belonged to the Human Race's territory, where demons were either pitifully weak or terrifyingly strong, sealed away in various places by Da Yu.
The situation in Dongsheng Divine Continent was somewhat special; it was here that the so-called treacherous rebels of the Demon Clan were entrenched, either in secluded cultivation, claiming mountains as their own, or having inexplicable relations with the Mystic Sect's three thousand doctrines.
The insurrection of the Demon Clan was the main target of Jiang Chen's current mission to capture demons.