In the middle Tang Dynasty, trade gradually matured, and copper coins were used as trading tools. By the Northern Song Dynasty, business trips were frequent, and trade was booming. For businessmen, copper coins were large and difficult to trade, and their purchasing power was extremely low, which was a great obstacle to trade. Coincided with the insurrection in Li Shun, the copper coins were greatly reduced, and the copper coins were replaced by jiaozi, which had the same nature when trading, and relieved the numerous troubles of business travel, so jiaozi became more and more popular. The first trademark recorded in China was the "White Rabbit" fine needle trademark of Liujia Needle Shop in Shandong Province in the Northern Song Dynasty. In the Northern Song Dynasty, the business was developed and the competition among businessmen became increasingly fierce. In addition to the decoration of the facade, it must also show memorable characteristics. For businessmen, the appearance of trademarks can better promote their own goods. Therefore, advertisements in the form of "trademarks" are accepted by more people. By hand, there are references.