1/ Look at your house. If your house faces south, all three bedrooms are in the south, that is, two bedrooms and four people live in the east and one bedroom and four people live in the west. If the man is in the west, he must choose the west position. If he is in the east, he should choose the east position or the middle position.
2/ According to the relative position of the entrance door, the position of the master bedroom, that is, the door and bedroom should be closed.
The above selection methods should be based on your own situation, with different emphases and different methods of edge selection.