Tea is the bud leaf of tea tree, which is fried. Once wet, it will change qualitatively. The aroma of tea itself is volatile and needs many environmental factors such as moisture, temperature and humidity, light and oxygen. Therefore, the containers and methods used for storage are more particular, and after a long time, there will be tea pots. In fact, in addition to its function of storing tea, teapot has always been loved by literati. There are many kinds of materials, such as wood, bamboo, ceramics, purple sand, tin, copper, iron sheet, cloisonne and so on. During the Jiajing period of the Ming Dynasty, the famous poet Xu Wei once wrote a poem, "The old green cage was sealed in Grain Rain, and the new teapot was bought in Yixing", which mentioned the teapot made of Yixing purple sand. Mr. Liu introduced that in the Guardian China Spring Auction in 2006, the Qingganlong royal purple sand mud painted orchid lotus teapot was sold at a price of 275,000 yuan. The collection value of tea pots can be seen.
In fact, most of the ancients used pottery containers to hold tea, and a few wealthy families also used tin containers to hold tea. A Qing and Liu Xianting said in Volume III of Yang Guang Miscellanies: "Huishan Spring is sweet in Zhejiang, so there is tin. I said that the nature of water and tea is the most suitable. Tin bottles store tea, and the aroma is not scattered. " Now teahouses bottle tea in glass in order to let customers see the appearance of tea clearly. Due to the material problem, the tin teapot has strong sealing performance, thick pot body and better heat preservation and fresh-keeping function. In ancient times, high-grade tea cans were mainly tin cans. In recent years, many modern imitations have appeared, so we should pay attention to distinguish the authenticity when collecting them.