Because the head of the bed faces west, there is a saying that the sun sets in the west. Second, it has an impact on the human body.
If you come to the door, there will be a door rush, which will affect your luck. In addition, when you sleep, a thief comes in at the door, and you have to turn your head to see it, so you feel insecure.
Put a mirror at the bedside, getting up at night to go to the toilet will scare you and affect your sleep.