Black brick tea, named after its dark color and brick-like finished product, is made of black hair tea. Now Hunan Baishaxi Tea Factory also produces it. Its raw materials are selected from high-quality black tea produced by tea factories in Anhua, Taojiang, Yiyang, Hanshou and Ningxiang counties. Since the early 1970s, Baisha Tea Factory has reformed the complicated and time-consuming procedures in the past. According to the original proportion of flour tea and lining tea, the black tea brick was successfully trial-produced in Baishaxi at 1939. When making, the raw materials are screened, shaped, winnowed, selected, cleaned and mixed; During mechanical pressing, high-temperature steam sterilization, high-pressure setting, inspection and finishing, slow drying, and packaging into finished brick tea.