What's the meaning of geomantic omen when sitting in a house facing south?

Regardless of latitude and longitude, the house facing south usually belongs to the main room, and the gate faces south, which directly determines the position of the room in all directions. Dongzhen belongs to the eldest son, the west belongs to the gold owner, and so on. There are many exquisite rooms. 1: The rooms in the southeast direction can be used except the bathroom. 2: The south direction is not suitable for kitchens and restaurants. 3: The northwest direction is not suitable for children's rooms. 4: Open the door according to the orientation of the house.