It's usually north and south. The emperors were very particular about this in ancient times. Take the royal palace, for example. There's no even number of rooms, only odd. The emperor's bedroom also had nine rooms. Because odd numbers are for the living. Even numbers are for the dead. 9 is the maximum. And the South is the land of plenty. For the sake of the country are sitting north to the south. Contains the meaning of mastering the world. An emperor who doesn't want to protect his position. So it's probably the same in the room. Other people's houses aren't usually so fancy.
And every emperor would have more or less contact with feng shui when he was in school.
Leaning against the north wall, facing east and west, these three curtains were surrounded, and the opening of the curtain was on the south. The emperor got up and sat on the edge of the bed, probably facing south