Zhongshan (c. 6th century BCE (?)

– c. 296 BCE) is a Di state created by the nomadic Xianyu tribe in China during the later Zhou Dynasty.

It is located about 80 miles southwest of Beijing, on the plain just east of the Shanxi plateau near the modern city of Baoding in Hebei.

Its name means "Central Mountains", as opposed to the Western Mountains of Shanxi or the Eastern Mountains of Shandong.In Chinese sources, it is called a state of the Baidi.