The canvas is simple in shape and unique in calligraphy. The word "cloth" in seal script is commonly called hanging needle and full of coins. In a stroke as long as 30 mm, the stroke line is only 0.36 mm wide. It can be said that the word "cloth" on the surface of coins accurately summarizes the material production and commodity exchange in Han Dynasty. During the reign of Wang Mang in the Han Dynasty, although it was only a few years, the rulers carried out four major currency reforms, which pushed the coinage technology at that time to a peak. From copper smelting to mold making, there are many inventions and creations, which also make the collection value of Wang Mang coins rise continuously today. For example, seven roads, Zhuang cloth, young cloth, empty cloth, first cloth and so on. It's hard to get a piece of 10 thousand yuan or several thousand yuan.