Posters: short knife gradient colors mysticism

Quick answer：

The term '海报短刀渐变之色玄学' refers to a concept in poster design that involves the mystical use of gradient colors with a short knife technique. This could be an artistic approach where gradients are created using a knife to apply paint in a sweeping, fluid motion, adding an element of mystique to the design. The term '玄学' suggests a philosophical or esoteric aspect to this design technique.