Located in the golden tea producing zone at latitude 27 ° -30 ° N, it is the only intersection of climate microbial fermentation zone, soil selenium rich zone, and plant community linolenic acid zone; The cloud and fog environment at an altitude of 500-800 meters provides sufficient diffuse light, and the large temperature difference between day and night is conducive to the accumulation of aromatic substances. The environment is rich in content, healthy, and naturally pollution-free.