Gold and silver powder printing and dyeing is to grind precious metals such as gold and silver into powder, then make gold mud or silver mud together with fibers such as silk, cotton and hemp, then coat it on silk or cotton and hemp, and finally rinse it with boiling water to remove impurities such as unbonded fibers to get gold and silver patterns or characters. This printing and dyeing technology first appeared in the Han Dynasty, when it was mainly used to make high-grade splendid fabrics.