What do you mean by empty mirror shooting?

Empty mirror shooting refers to shooting scenes or buildings without specific characters, which is one of the shooting methods, also known as "scenery lens". A scene depicting natural scenery or no characters in a movie. Empty lens and conventional lens can complement each other but can't replace each other. They are often used in film production and are an important means for directors to clarify their thoughts, tell stories and express their feelings.

There are two kinds of aerial photography: scenery photography and physical photography. The former is generally called landscape shooting, and it is mostly represented by panorama or perspective. The latter, also known as "detail description", generally adopts close-up or close-up. The use of empty lens is not only a simple description of scenery, but also an important means for film creators to combine lyric techniques with narrative techniques to strengthen the artistic expression of films.