Yunxian County is located in the southwest of Yunnan Province, northeast of Lincang area, facing Jingdong County in Simao area across the river in the east, Lincang and Gengma counties in the south, Fengqing and Yongde counties in the west, and Nanjian County in Dali Prefecture with Lancang River as the boundary in the north. The county is 90.4 kilometers long from north to south, with a maximum horizontal distance of 84.2 kilometers from east to west, with a total area of 3,760 square kilometers. (The answer comes from Baidu Encyclopedia)
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