The magical function of Anhua dark tea is developed with its unique processing technology. Thousands of years of exploration and practice left Anhua dark tea a unique and mature processing technology, which is initially processed into raw dark green tea by spreading, deactivating enzymes, primary kneading, pile fermentation, re-kneading and drying,and then made into finished products by various refining processes. Pile fermentation, baking, drying of seven-star stove and "flower development" techniques are all characteristic techniques. Through pile fermentation, the tea tastes mellow and non - astringent, with typical "fermented flavor". The seven star stove pine wood fire drying method makes the tea black and oily, the soup red and bright,the taste thick, and has pine smoke fragrance. "Flower development" technique of Fu brick tea promotes the growth and reproduction of "golden flower" in the tea,namely eurotium cristatum,which directly affects the taste, aroma and pharmacological effects.