According to the principle of acquired gossip in Zhouyi, houses can be divided into four rooms in the east and four rooms in the west according to different sitting directions, among which Zhai Zhen, Xunzhai, Libai and Kanzhai are the four rooms in the east, and Zhai Kun, Duizhai, Ganzhai and Genzhai are the four rooms in the west.
For Dongsi House, the sofa should be placed in the east, southeast and north and south of the room.
West Four Houses, sofas should be placed in four auspicious directions of the room, namely due west, southwest, northwest and northeast.
If carefully divided, although they are all East Fourth Hospital, they are divided into East, Southeast, South and North. It is also the West Fourth Hospital, and there are also points of sitting in the southwest, sitting in the west, sitting in the northwest and sitting in the northeast. Therefore, according to the gossip of the Book of Changes, the choice of placing sofas will be different.