The city of Puer was historically the center of the tea trade in Yunnan. To be authentic Puer tea, it must be grown in Yunnan, made from the native Dayezhong large-leaf Assamica or the wild Yeshengcha cultivar, and must be sun-dried. Puer teas made from old trees are often referred to as Lao Cha or Da Cha (over 100 years) and Gu Shu Cha (over 200 years). Such teas are valued and have extensive added value for human body and soul. There are two basic types of Puer tea 普洱茶: Sheng Puer (green or raw - Sheng Cha 生茶) and Shu Puer (black or ripe - Shu Cha 熟茶). Both types begin as a minimally oxidized and almost raw loose green tea-like product known as Maocha 毛茶. Only a small amount of tea remains in the form of maocha, most is pressed into various shapes such as bricks or cakes. Quality Puer tea matures and gains value with age.

Bai Ying Shan 白莺山 Mountains

Bai Ying Shan 白莺山 Mountains

Bai Ying Shan 白莺山 is one of the branch mountains of Wu Liang Shan 无量山 in Southwest Yunnan Lincang Region, and near Lan Cang River. Though it is still not as famous as many other tea mountains of Yunnan,  Bai Ying Shan is the origin of the Yunnan old big tea trees as study indicates. Here there is the oldest tea tree more than 3000 years old, and the biological character of the tea seed of Bai Ying Shan old tree proves here is the birthplace of the Yunnan Big Leaf Tea. The tea species growing here according to the farmers include Ben Shan Cha 本山茶, Hei Tiao Cha 黑条茶, Er Ga Zi Cha 二嘎子茶,Meng Ku Zhong 勐库种, Bai Ya Cha 白芽茶,Liu Ye Cha 柳叶茶, He Zhuang Cha 贺庄茶 and Teng Zi Cha 藤子茶.