Can the leads in the criminal photography volume cross?

You can't. When indexing photos, diagonal lines and intersecting lines are used, or a standard wire is folded at more than two angles, even reaching four right-angle bends. According to the quality requirements of criminal photography, the scene photos should be marked with words and indexes, and the standard lead should be red or black. Standard lead can't be diagonal, it can't cross or turn more than twice, and it can't cover the important area of the photo.