In paper-cutting, the "male scissors" mainly focus on the first line, keeping the modeling line and cutting off other parts. The threads of the male scissors are connected by threads. Yang-cutting is to keep the shape and cut off the outside, which is called orthomorphism.
In paper-cutting, the "negative scissors" are mainly one piece, and the modeling lines are cut off. The lines of the negative shear are broken lines, and the negative shear is to cut the shape empty, which is called negative shape.
A good paper-cut work is mostly treated artistically by the combination of female scissors and male scissors.
The head portrait in the middle of the picture mainly adopts Yang Jian; The following text uses negative scissors.