Compared with the urban area of Chengde, Shuangluan District of Chengde is a little worse. Located in the western suburb of Chengde City, Hebei Province, it is about 1 1.5km away from Chengde City. Shuangluan District is adjacent to Shuangqiao District, Chengde County, Luanping County and Longhua County, and its geographical location is relatively remote. The total area of Shuangluan District is about 250.7 1 km2, and its geographical coordinates are 401min north latitude to 40 52 min east longitude117 42 min east longitude. Because it is far away from the urban area, there may be relatively few traffic and infrastructure, and the population density is also low, so it can be said that Shuangluan District of Chengde is a relatively remote area.