What are the characteristics of the growing environment in yunnan black tea?

What are the characteristics of the growing environment in yunnan black tea?

The main producing areas are Pu 'er, Lincang, Baoshan, Fengqing, Xishuangbanna and Dehong. The main feature of these places is that the peaks of the producing areas are undulating, and the average elevation is above 1000 meters. It has a subtropical climate, with an annual average temperature of 18 ~ 22℃ and an annual accumulated temperature of over 6000℃, with a large temperature difference between day and night. The annual precipitation is 1200 ~ 1700 mm, which has the climatic characteristics of "fog in the morning and evening on sunny days, and high clouds and light clouds in the whole Tianshan Mountains on rainy days". The forest is dense, the fallen leaves and hay form a deep humus layer, and the soil is fertile, which makes the tea tree tall, with strong buds, fat leaves and dense white hairs. Even if it grows to 5-6 leaves, it is still soft and tender, especially the tea leaves are high in polyphenols and alkaloids.