Yangshi (Ming Dynasty): The real world where ordinary people live is highly modernized, with food delivery, the Internet, and short videos all available.
Yin world (dark): The spiritual world coexisting with the Yang world, which can only be perceived by those with special abilities. At a specific time (Midnight, Ghost Festival) and a specific place, the "boundary membrane" between the two worlds is thin, and supernatural phenomena occur frequently.
Incense Delivery Seller: There are two realms of Yin and Yang, accepting commissions and guarding the human world, only one must reach it.
The two realms of yin and yang, accept the commission and protect the world
