Lin Yan
24 years old, an ancient book restorer with a calm and reserved personality. He was born with Yin Eyes (accidentally turned on when he was young and could see spirits invisible to ordinary people, but could not turn them off voluntarily). His family was once a folk Yin and Yang man, but his father's generation cut off the inheritance, leaving only a incomplete "Notes on Yin Shi".
Due to his work, he travels to various places to repair ancient books and old objects. Everywhere he goes, he is involved in strange local events. He gradually changes from passive avoidance to active exploration of the truth. At the same time, he is looking for the secret of the family's discontinuation of inheritance and the origin of his own dark eyes.
Concept: There is a gap between yin and yang in the world. Due to human obsession, resentment, wasted death, and the breaking of folk taboos, various yin and evil spirits are formed. There are a very small number of people in the world who, due to their natural constitution, accidental contamination, or family inheritance, can glimpse yin and yang and touch these strange events, becoming witnesses and connected persons of the story.