Ye Xiao got to know many things about the Blood Demon Sect and its terrain.
One of such things was that the Immortals cultivate the Dao Soul Stage of Dao Manifestation Realm to evolve their souls into Divine Soul while Demons cultivate the Dao Soul Stage to evolve their soul into Devil Soul.
After cultivating to the Late Stage of the Dao Tribulation Realm, Immortals could transform into Divine Being while Demons transformed into Devils.
Devils are many times more terrifying than Demons.
There was a time when, in the Upper Realm, a devil was born. That devil caused great destruction in the Upper Realm. To stop the devil, many Dao Manifestation Realm Immortals sacrificed their lives but failed to do anything.
