The history of Pu 'er tea can be traced back to the Tang Dynasty, when tea appeared in the mountains around Yinsheng City. According to textual research, the tea in Yinsheng city should be Yunnan Daye tea, that is, Pu 'er tea variety 1. In the Ming Dynasty, some people used the sun-drying technology to make crude tea in Pu 'er tea. Regarding the characteristics of the sun-drying technology Pu 'er tea, there was the earliest expression: "The older the tea, the better". During the Qing Dynasty, Pu 'er tea made unprecedented development and became a famous tea in China, which was mainly divided into Tibetan tea, tribute tea and general high-grade Pu 'er tea close to the standard of tribute tea. With the deepening of people's understanding of Pu 'er tea, its influence is also increasing year by year. In 2007, Pu 'er tea became one of the three hot words in China. The history of Pu 'er tea can be traced back to the Tang Dynasty, when tea appeared in the mountains around Yinsheng City. According to textual research, the tea in Yinsheng City should be Yunnan Daye tea, that is, Pu 'er tea. In the Ming Dynasty, some people used sun-drying technology to make raw tea in Pu 'er tea. The characteristics of sun-drying technology Pu 'er tea were first stated: "The older the better". During the Qing Dynasty, Pu 'er tea gained unprecedented development and became a famous tea in China, which was mainly divided into Tibetan tea, tribute tea and ordinary high-grade Pu 'er tea close to the standard of tribute tea. With the deepening of people's understanding of Pu 'er tea, its influence is also increasing year by year. In 2007, Pu 'er tea became one of the three hot words in China. Pu 'er tea, also known as Yunnan Pu 'er tea, is one of the traditional famous teas in China, which originated in Pu 'er area of Yunnan Province. The history of Pu 'er tea can be traced back to the Tang Dynasty, but its large-scale commercial cultivation and production began in the 1950s. In the past, Pu 'er tea was mainly used for goods trading, gifts and currency in long-distance trade. Pu 'er tea is also regarded as a healthy drink because of its unique drinking method and preservation characteristics. In China's traditional medicine, Pu 'er tea is considered to help reduce heat energy, promote the health of digestive system, lower cholesterol and prevent cancer. The production process of Pu 'er tea also has rich cultural connotations. The production process of Pu 'er tea includes picking, withering, deactivating enzymes, rolling, stacking and baking, and each link requires the tea maker to have superb skills and experience. The quality and value of Pu 'er tea have been continuously improved with the passage of time, among which the old Pu 'er tea is regarded as a priceless treasure. In addition to the cultural connotation of the production process, Pu 'er tea also has a strong cultural and historical background. Pu 'er is an important part of Chinese traditional tea culture, which is closely related to literary works, opera, music, painting, calligraphy and other fields in Chinese mainland, Hong Kong and Taiwan. Pu 'er tea is also one of the important representatives of tea culture in China. It is not only an important carrier of tea ceremony and tea art, but also an important symbol of Yunnan folk culture.