The Wugui Inn, which is isolated from the world, is an absolutely closed secret realm wrapped in a void rift, and it is also a cage that seals twelve unsolvable monsters.
There is no escape route here, no external aid, only twelve interlocking sets of killing rules, each of which points to a certain death: the ghost who knocks the door and dies immediately, the ghost who looks in the mirror and seizes the body, the ghost who tamperes with time, the ghost who breaks his words... The twelve ghosts are everywhere in every corner of the inn, and if you are not careful, you will be doomed.
