My Deskmate Is a Female Ghost

There are no immortals, gods, Buddhas, or underworld in this world, but there are ghosts and demons. The forces of ghosts and demons are not unified. People will cooperate with good demons or ghosts. Ghosts and monsters will disguise themselves as gods to get incense. This country allows it, as long as they don't hurt people or cause chaos. Of course, there are evil ghosts and demons as well as human evil cultivators, who use human souls and bodies to practice evil arts.