Clouds are handmade, and the size of a pair of clouds is not normal for a while. After all, it was made by hand. Yunzi Weiqi is a brand of Yunzi, which is developed on the basis of inheriting and carrying forward the advantages of Guyunzi. Yunzi is not only one of the few advanced practical instruments in chess, but also an excellent souvenir given to friends by celebrities and scholars. There are dozens of raw materials such as agate stone and amethyst, and the formula is confidential. The production process includes 1 1 procedures such as seed dropping, annealing, polishing, artificial seed selection and oiling, and each cloud seed is made by workers. Yunzi production technology of Yunnan Weiqi Factory is second to none in China. The formula, temperature and skill of the idea are all important factors affecting the quality. It takes 8- 10 years to train a skilled technician, so this technology itself belongs to intangible cultural heritage. Because cloud seeds are handmade, the output in one day is not high, and two workers can only produce two sets in eight hours. Xinyunzi inherits the characteristics of the traditional old Yongzi, which is more glossy, better in color and compactness than the old Yongzi.