Pu'er used to be an important post station on the "Ancient Tea Horse Road".Influenced by the subtropical monsoon climate, most areas here are frost free all the year round. It is one of the important producing areas of famous Pu'er tea and one of the largest tea producing areas in China.Pu'er City is located in the southwest of Yunnan Province. The mountains in Pu'er City rise and fall, accounting for 98.3% of the total mountainous area.Pu'er is located between 22 ° 02 ′ - 24 ° 50 ′ north latitude and 99 ° 09 ′ - 102 ° 19 ′ east longitude, with the Tropic of Cancer crossing the central part (because it is near the Tropic of Cancer, affected by topography and altitude, it has obvious vertical climate characteristics, with an altitude between 376 meters and 3306 meters. It shares the same latitude with Cuba in North America and Taiwan Province in China).It is adjacent to Honghe and Yuxi in the east, Xishuangbanna in the south, Lincang in the northwest, Dali and Chuxiong in the north.It borders Vietnam and Laos in the southeast and Myanmar in the southwest
