One: don't put the bed opposite the bedroom door, which means it's best not to see the bed easily when you enter the door.
Two: the bedside should be placed near the east (absorbing the essence of the sun rising to the earth).
Three: the bed should be placed horizontally, not vertically (subject to the shape of the room and the direction of the door).
Four: the bed can't be placed under the beam. When it is inevitable, the mascot can be placed on the diagonal of the room.