Black tea is one of the six famous teas in China, which belongs to post-fermented tea and is unique to China. It has a long history of production, mainly in Hunan, Hubei, Sichuan, Yunnan, Guangxi and other places. Because the raw materials of black tea are coarse and old, it often takes a long time to accumulate and ferment in the production process, so the tea leaves are mostly dark brown, so it is called "black tea". Among them, Yunnan Pu 'er tea and Guangxi Liubao tea are famous.

Dark tea