Green tea has a long history, so Nianshanhe tea generally refers to green tea.

Tea, shrub or small tree with hairless shoots. Leaves leathery, oblong or oval, blunt or sharp at the top, wedge-shaped at the base, shiny on the top, hairless or initially pilose on the bottom, serrated at the edge, and glabrous on the petiole. Flowers are white, and sometimes the stalks are slightly longer; Sepals broadly ovate to rounded, glabrous, persistent; Petals broadly ovate, slightly articulated at base, glabrous on back, sometimes pubescent; Ovary densely covered with white hairs; Style glabrous. Capsule 3 is spherical or 1-2, with a height of1.1-0/.5cm, and each ball has 1-2 seeds. The flowering period is from June 10 to February of the following year. Wild species are all over the mountainous areas of the provinces south of the Yangtze River in China. They are small trees with big leaves, usually more than 10 cm long. For a long time, after a lot of cultivation, great changes have taken place in hair and leaf shape. Tea can be used as a beverage, which contains many beneficial ingredients and has health care function. Health care function: it can reduce the risk of cardiovascular and cerebrovascular diseases and death, cholesterol and blood pressure, help to reduce the risk of diabetes, help to prevent and treat Alzheimer's disease, have anti-stress and anti-anxiety effects, improve immunity, improve sterilization and lose weight.