Pu 'er City, also known as Simao, is a prefecture-level city in Yunnan Province, located in the southwest of Yunnan Province, which governs 9 counties in 1 district. In 20 12, the city's population was 2.58 million, with a total area of 45,385 square kilometers. On June 2007, 65438+1October 2 1, Simao City was renamed Pu 'er City. Pu 'er City has jurisdiction over Simao District, Ninger Hani and Yi Autonomous County, mojiang hani autonomous county, Jingdong Yi Autonomous County, Jinggu Dai and Yi Autonomous County, Zhenyuan Yi Hani and Lahu Autonomous County, Jiangcheng Hani and Yi Autonomous County, Menglian Dai Lahu and Wa Autonomous County, Lancang Lahu Autonomous County and Ximeng Wa Autonomous County, respectively, and the municipal people * * *. June 5438+October 2007 10, the original Simao City was renamed Pu 'er City, and Cuiyun District was renamed Simao District. Simao District, which belongs to Pu 'er City, Yunnan Province, is located in the south of Yunnan Province, south-central Pu 'er and the middle and lower reaches of Lancang River. Simao District is the starting point of the ancient tea-horse road, the Southern Silk Road, and one of the three major customs towns in Yunnan. It was once called "Southeast Asia Land Wharf" and "Insmao".