On the Canglong Continent, there exists no notion of godly demons; Dark Practitioners adhere to Dark Power and the Heaven and Earth Laws.
In the history of the continent, records of godly demons are also rare, as if deliberately erased by someone. The term "demon" on the continent specifically refers to Dark Practitioners who have spiraled into the evil demonic path.
Ordinary Dark Practitioners cultivate Dark Power, but there is also a portion of Dark Practitioners who, during their cultivation, are beset by Heart Demons, ultimately falling into the demonic path.
The Dan Demon is one of the most notorious among them. How he died, and when he died, remains a mystery to this day.
The only thing known to the world is that the Dan Demon Tomb turned from a fertile land of plenty into a cursed swamp haunted by aggrieved spirits, all because of the emergence of the Dan Demon.