Jiang Nanyu is the main protagonist, an 18-year-old disciple of Changqing Monastery who studied Taoist metaphysics under her master Chang Yinzi. She is about to start university and works as a night watchman at West Mountain Funeral Home to earn money. She is brave, skilled in talismans and exorcism, and has a fondness for gossip. She helps ghosts solve their problems and uncovers dark secrets, showing both strength and kindness.