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MA CHANG, Yanqing County, Beijing. Overview. On the border between Beijing Municipality and the surrounding Hebei Province, Ma. Chang is a large area of grassland, criss-crossed with tracks, on the edge of the Guanting. Reservoir in Yanqing County. It is particularly productive for birds during spring and. autumn migration, during which time a daily tally of 70+ species is usual.
After the First Emperor unified China, Beijing became a prefectural capital for the region. During the Three Kingdoms period, it was held by Gongsun Zan and Yuan Shao before falling to Cao Cao 's Wei Kingdom. The AD 3rd-century Western Jin demoted the town, placing the prefectural seat in neighboring Zhuozhou.he first walled city in Beijing was Ji, a city-state from the 11th to 7th century BC. Within modern Beijing, Ji was located south of the present Beijing West Railway Station. This settlement was later conquered by the state of Yan and made its capital under the name Yanjing.