There are a lot of different tea places in Yunnan province famous for a huge amount of old and even ancient tea trees. Tea leaves from these trees have special character, taste and aroma due to a specific tea tree variety, as well as climate, soil and humidity.
There are three main areas:
Jinggu, Jingdong and Lancang countries
Pu'er city, Jingmai, Wu Liang, Ailao, Kunlu and others (mountains)
Shuangjiang, YongDe, Linxiang, Yunxian and Fengqing countries
Mengku, Da Xue Shan, Bing Dao, Xigui and others (mountains)
YiWu, Yibang, Man Zhuan, Man Zhi, Gedeng, Youle
Nannuo, Bada, Hakei, Bulang (Laobanzhang, Lao Man Er, Mannuo), Mengsong
The name of pu'er teas usually sounds like: "YiWu Gu Shu Sheng/Shu" , where "YiWu" is the name of the area/mountain, Gu Shu means that the leaves plucked from ancient trees and Sheng/Shu is the type of pu'er tea.