Paper was invented in the Western Han Dynasty, and Cai Lun began to make paper in the Eastern Han Dynasty. Before Cai Lun, China had "paper" in the Western Han Dynasty. China was the first country in the world to invent paper. According to archaeological findings, in the Western Han Dynasty, China already had hemp fiber paper. But the texture is rough and the quantity is scarce.

Paper, also known as matte felt paper, is made of raw materials containing plant fibers through pulping, modulation, papermaking, processing and other technological processes, and can be used for painting, printing books and newspapers, packaging and so on. Unlike _ _ _, _ _ is the "silk" of animal fiber. Paper that can be folded at will for writing.