Rebuilding the Yin Division from Lonely Souls and Wild Ghosts

The underworld is the place that governs the lives of all living things. After the death of all things in the world, their souls will be bound to the underworld by the two constants of black and white, and all their good and evil deeds in the yang world will end here. As the saying goes, the living are in the Yang world and the dead are in the underworld. There is a world in the Yang world and a world in the underworld. Everyone says that the underworld is spooky and terrifying, full of lonely souls and wild ghosts. But I don't know when it started that ghosts and demons are rampant in this world like the underworld. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.