It has a permanent population of 317,000 .
Located in northwestern Beijing , Yanqing District is 74 kilometres from the city centre and occupies a total surface area of 1,993.75 square kilometres .
Yanqing District has a permanent population of 317,000 .
Located in northwestern Beijing , Yanqing District is 74 kilometres from the city centre and occupies a total surface area of 1,993.75 square kilometres .