Analysis:
In China, the sun rises in the east at sunrise and sets in the west in the evening. At night, the sun is in the west of the sky. When we face the sun, the direction we face is the setting direction of the sun (the west), and our backs are opposite to the west, that is, our backs are the east. When facing west, the north is on the right and the south is on the left.
Extended data
East, south, west and north are the basic directions; Northeast, southeast, etc. It's the middle direction. In birthdates, the diagonal distance between two planets is called azimuth. Eight house geomantic omen determines the sitting direction of the house according to the orientation of the gate.
The orientation of eight homes corresponds to eight kinds of hexagrams, namely, earthquake, separation, exchange, hurdle, Xun, Kun, Gan and Gen. The orientation of a house determines which kind of hexagrams it belongs to. East belongs to earthquake, south belongs to separation, west belongs to communication, north belongs to Kan, southeast belongs to Xun, southwest belongs to Kun, northwest belongs to trunk, and northeast belongs to Gen.