1. It refers to the biggest lighting surface of a house. Generally, the direction of the main balcony is the biggest lighting surface. So many people take the balcony as their orientation. South: It means that the balcony faces south.
2. geomantic sayings: the direction of the wind is relative to the direction of the house. If the room is facing north. Then it faces south. If the house has no orientation (as many high-rise buildings with two floors and six households now have no orientation), then the house has no orientation, so it is called Jifang.