Folding fan structure?

Folding fan, also known as "unfolding fan", "folding fan" and "kneading fan", is a foldable fan with bamboo or ivory as its rib and tough paper or silk as its sector. When using it, it must be scattered, semi-regular and scattered. It is said that during the Northern Song Dynasty, friendly exchanges between China and Japan were very frequent, and Japanese folding fans were spread to China as gifts and commodities by Japanese businessmen, monks and envoys.

Folding fan consists of two parts: fan face and fan bone. According to the texture, there are two main departments: paper and silk. As a work of art, fans began in the Song Dynasty. In the Northern Song Dynasty, people wrote poems and painted on paper folding fans. In the Southern Song Dynasty, silk folding fans appeared. In the middle of Ming dynasty, folding fan calligraphy and painting became popular. Because the sector is semicircular in shape, its composition is unique, forming an interesting painting scene. Whether it is landscape figures, flowers, birds and animals or poems and songs, it can create a composition effect with fresh and changeable style and complex layout.