One of the duels between God and Satan ended in Satan's defeat. Two black feathers fell into the Magic Kingdom, and Xuanyin turned them into a dark jade bracelet and a night devil's book.
These two things triggered all kinds of things in the Magic Kingdom and the Human World!
Can the Magic Kingdom survive?
What is the ending of Ai Eryu Xingyu?
What's the fate of fallen feathers? ． ． ． ． ．