1, the mirror can't face the door.
The mirror has a reflective function, which can reflect the evil spirits in the wind and water back, so it can block the evil spirits. However, the mirror facing the door will shine the murderer into the bedroom and bring bad luck.
2. The mirror should not be placed on the bed.
Mirrors are used to block evil spirits and reflect them back, so they are not allowed to face the bed. Especially when people wake up from sleep and are not conscious, they are easily frightened by themselves reflected in the mirror or French window.