Erquanjing Township
Erquanjing Township is a rural township located in Zhangbei County, Zhangjiakou, Hebei, China. According to the 2010 census, Erquanjing Township had a population of 11,531, including 5,941 males and 5,590 females. The population was distributed as follows: 1,671 people aged under 14, 8,052 people aged between 15 and 64, and 1,808 people aged over 65.