How to hang a round bronze mirror?

Can only be hung on the door, or at the entrance of the door, or on the back wall of the door. You can't hang it everywhere.

If it is a building, then the entrance to the gate should be set as a porch. Without the entrance, there will be a wall, just hanging on it.

If it is a bungalow, the wall facing the porch (usually a decorative wall) is called the shadow back wall.