Mentougou District is a district of the city of Beijing. It is at the western part of the city. Spanning 1,321 square kilometres (510 sq mi), with 392,606 inhabitants, it is subdivided into 4 subdistricts and 9 towns. It borders the Beijing districts of Changping to the northeast, Haidian and Shijingshan to the east, Fengtai to the southeast, and Fangshan to the south, as well as Hebei province to…