Wu Yin is the main female protagonist, a cultivator from Wufang Valley who has been bestowed the name Wu Yin by her master. She has incomplete memory, unable to recall her secular name or ID number, and lacks spiritual energy in the modern world. She often goes hungry but is physically strong, able to lift heavy objects with ease. She practices divination in exchange for meals or money, and possesses Merit Power that can be converted into spiritual energy. She is kind-hearted but pragmatic, willing to help others like Wang Dali's daughter and Zhao Yu. She is resourceful, working temporary jobs like moving bricks at a construction site, and is indifferent to money but values her principles. She maintains a calm, detached demeanor and is adept at handling dangerous situations, such as confronting kidnappers. She is unfamiliar with modern technology, lacking a mobile phone, and lives under a bridge or in other temporary shelters.
