Blue brick tea is neither black tea nor green tea, but a kind of black tea. Black tea belongs to one of the six major teas and belongs to post-fermented tea. The main producing areas are Sichuan, Yunnan, Hubei, Hunan, Shaanxi, Anhui and other places. Black tea used in traditional black tea has a high maturity and is the main raw material for pressing pressed tea. Brick tea is made from Hubei old green tea, and it is produced in Yangloudong Ancient Town, Zhaoliqiao, chibi city City, Hubei Province, with a history of more than 600 years. Green tea is unfermented tea and black tea is completely fermented tea.