It has something to do with home feng shui. In principle, it is not advisable to set a mirror in the bedroom. There should be something behind the bed. If the bed is empty, it is called "the sun never sets the stars". Leaving blank means that there is no back hill and no backer. Explain that the career is unstable. If there is no support at both ends of the bed, it is called "Shen" bed in geomantic omen. A pillar behind the bed means that you can only rely on half, and you are still helpless.
The mirror shouldn't face the bed. The role of mirror in geomantic omen is mainly used to reflect evil spirits, fight against evil spirits that come straight at you and avoid being destroyed by evil spirits. If there are mirrors on both sides of the bedroom, it will be bad. In addition to affecting health and marital feelings, it will also affect wealth and children. Especially at the end of the bed, don't hang a mirror. Because this mirror is like a "soul mirror", it will make people in this room feel uneasy. If you want to install a mirror in the bedroom, you'd better install it in a hidden place.