Katydus Si Yu is an ancient Chinese character, in which "Katydus" refers to a large grasshopper, while "Si" means "this" or "this", and "Yu" means wing. Thus, katydid feathers refer to the wings of grasshoppers.

In Chinese culture, katydid feathers have a very important symbolic meaning. In poetry, it is often used to describe the self-satisfied appearance of grasshoppers; in folklore, grasshoppers also symbolize happiness and freedom. In addition, the sound of grasshoppers is often used to describe the atmosphere of rural life.

In addition to its important symbolic significance in the cultural field, katydid feathers also have their own unique scientific value. Researchers have found that the shape and structure of katydid feathers could provide inspiration for the design of new types of aircraft and microrobots. In addition, the materials and textures of katydid feathers can also help people research new materials and optical technologies.