1) The bedroom door should not be facing the bed, and the bedside should not be against the door or the back door. This is because the doorway is also the tuyere, and people will inevitably be affected when they are sleeping, and they are prone to illness or anxiety. Because of the need for a peaceful environment for sleep, the back door of the bed is easily disturbed and frightened. The bed is a thing, only for sleeping. It is most suitable to be quiet and safe, while the door is a long-moving thing, which is sometimes opened and closed. If you rush straight at the portal, natural disadvantages will arise, so it is not suitable.
2) It is best to choose the north-south orientation of the bed, corresponding to the gravity of the earth's magnetic field. Sleeping with your head facing south or north is good for your health, because it is in the blood circulation system of your body. Aorta and great vein are the most important, and their directions are consistent with the head and feet of human body. When the human body is sleeping in the north-south direction, the aorta and the great vein are facing, and the direction of the magnetic field lines of the north and south of the earth is consistent. At this time, people should not face west, because the earth rotates from west to east, and if the head faces west, the blood often rushes straight to the top of the head, and the sleep is not stable: if the head sleeps in the east, there will be a sense of peace.
3) The bedside should be solid rather than empty, and it should be against the wall, not by the window. If the bed is not against the wall, there must be a headboard at the head of the bed. It will not make people stupid, and there can be no toilet or kitchen behind the head of the bed.