What do the spaces in the jigsaw puzzle mean?

Blanking puzzle card refers to leaving a certain blank border outside the pattern in addition to the complete puzzle pattern.

Generally speaking, the purpose of leaving a blank border is to look better when mounting, so that the picture looks less full and more aesthetic.

Blank composition is a photographic composition method that reflects color contrast, light and dark contrast and cold and warm contrast in photography. It means that there is a lot of blank space on the side of the main characters in the photographic works, and the rich subject collides with the minimalist background environment. This composition method can effectively refine the subject and concentrate the viewer's attention.