In the Qingyun Palace, Ao Xuan began to disclose the true nature of what is known as the great calamity of the era, unraveling the mystery for all present.
Demonic spirits and malevolent fiends—the former denotes demons, and the latter, evil devils. According to Ao Xuan, these two are the greatest threats to the myriad realms since the beginning of history.
Of course, there are no demonic spirits in the Upper Realms now, just evil devils, but in many worlds like the Nine States, all were destroyed by demonic spirits.
How the Upper Realms came to be, naturally, was due to the shattering of various heavens and earths, the destruction of the myriad realms, and ultimately, all the fragments of these worlds merged to form what is now known as the grand universe.
The Three Thousand Six Hundred Domains represents an unknown number of myriad worlds that were all destroyed by demonic evil.
Among this destruction, countless creatures have also perished at the hands of demonic evil.