Northwest Tianmen, Southeast Dihu, Southwest Gate, Northeast Ghost. Some people further believe that the sea is the Tianmen, and it has become a local family, with God as a door and Yin as a ghost household. Dishes unearthed in the Han Dynasty are characterized by Tianmen between the seas, landlords between Tatsumi, ghost households and secret doors in the ugly shadows. (Eight diagrams and twelve places are joined together: the dry sea is in the northwest; Ugly gen yin is in the northeast, in the southeast and in the southwest. )