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云南省地处我国西南边陲,省内有8个州市,25个县与缅甸、老挝、越南三国接壤,边境线长达4060 km,占我国陆地边界的1/6。边境地带与邻国山水相连,边民生活习性相近,通婚、互市十分普遍,经贸往来频繁,疾病传播无天然屏障。世界著名的毒品种植、加工、集散地“金三角”就位于此区域内。毒源
Yunnan Province is located in the southwestern border of China. There are eight prefectures and cities in the province. 25 counties are bordered by Burma, Laos and Vietnam. The border reaches 4060 km, accounting for one sixth of China’s land border. The borders are connected with the landscapes of neighboring countries. The living habits of border residents are similar. Marriage and inter-city exchanges are common, economic and trade exchanges are frequent, and there is no natural barrier to disease transmission. The world famous drug cultivation, processing, distribution center “Golden Triangle ” is located in this area. Source of poison