In the nine squares of Taoist magic, besides the fifth house, there are eight houses, each of which corresponds to a hexagram and a door.
Kangong in the north is a closed gate, Gegong in the northeast is a valve, Gong Zhen in the east is a wounded gate, Gong Xun in the southeast is a Doumen, Gonggong in the south is a scenic gate, Gong Kun in the southwest is a dead gate, Gonggong in the west is a thunder gate, and Gonggong in the northwest is an open gate.
It is lucky to open three doors to rest, Dumen Jingmen is half lucky, and he was killed by a surprise attack on three doors.