The genius doctor Feng Ye inherited the inheritance from the originator of traditional Chinese medicine and practiced medicine in a low profile, but accidentally "picked up" Xiaoxue, a thousand-year-old female ghost who can transform. The rental house becomes a strange clinic: he diagnoses the pulse with silk threads, and her soul assists; he treats diseases and saves people, and she is eccentric. Amid the fireworks in Spring City, they rose to fame.
After settling in, they set foot on the mountains and rivers and uncovered a series of strange and supernatural events, only to see a series of bloody love affairs blocked by life and death. Relying on the yin and yang medical skills and the power of the soul, they become the only salvation for romance, resolve obsessions, and find hope for impossible love. There are ghosts in the book, but it is not scary, but deeply touching. Humans and ghosts partner up to walk on the edge of Yin and Yang, specializing in "love separation", purifying "unable to ask for", curing the world's regrets, and writing their own legendary love songs that span life and death.