How many ghosts can a person possess?

This can be your psychological hint, as much as you want. This is that there will be ghosts in your heart. Theoretically, only one ghost can be attached to a person. Of course, powerful ghosts have priority, but this view has not been internationally recognized and has no theoretical basis. So it can only be wishful thinking. Different countries have different identities and customs of ghosts and gods. Maybe ghosts also have regional characteristics. Only when ghosts and gods are internationally recognized is it worth discussing.