Nice flannel. Couplets, one of the traditional cultures in China, also called couplets or couplets, are antithetical sentences written on paper, cloth or engraved on bamboo, wood and columns. Flocking couplets are paper, with a layer of rags on the surface. They are afraid of water, and flannel is made of cloth, which is better than flocking couplets. The antithesis of couplets is neat and even, which is a unique artistic form of Chinese language. Couplets are the treasures of China traditional culture.