Wanping, since ancient times is the South portal, urban construction in the late Ming Chongzhen ten years (1637), it was the Ming dynasty war period, built the city to troops guarding the capital. Ming said circumpolar city; Qing was renamed Gongbei city, was not called South Wanping County, Beijing City, near the drum tower. Xin Hai revolution, Wanping county was placed under the Hebei Province, Wanping County Department officially relocated here, while the seven seven incident that occurred in the south edge of the city. The shape structure of its construction in the early and ordinary county, no general county city streets, alleys, internal market, Bell Tower and Drum Tower and other facilities. The town is only two things, and have a Barbican and towers, the whole wall thick, sturdy, is conducive to defend the capital.