The plot is okay, but a bit too sloppy in some aspects. In particular, the details are not introduced in place and the expression is not in place. Especially the details of the various forces are too sloppy. It's just a brief introduction without any detailed explanation.
I feel like this book is after finishing Crack in the Demon Moon. I feel that the first step has been completed. The second part may be written around the descendants, or it may be that a rift in the Demon Realm appears again, and then it goes to other worlds, where there are so many loose immortals. The plot and the descriptions of the major forces are quite good, and it is already a ceiling.