Wu Ren travels through time to become Lily's twin sister Lillian, who is not in the original work, and enters the snake's den and spends more than 20 years killing the snake's head. This article is a revised draft. The update is much slower than the first draft and will be revised repeatedly. Readers are advised not to read it before it is completed. The main plot is consistent with the first draft, and most of it is the emotional description, the use of witchcraft and the rendering of emotions. Of course, there are also revisions of inconsistencies. CP is Wu Ren-Wu Yuran; Lilian Mimir; An-Sifu. The original pairings will not be changed. Although the author hopes to achieve a more balanced and warm-toned ending, in order to express the theme of the article, the protagonist Wu Ren/Lillian will die in the final battle.