Quây Sơn River

The Quây Sơn River (Vietnamese: Sông Quây Sơn) or Guichun River (Chinese: 归春河) is a river of Cao Bằng Province, Vietnam and of Guangxi province, China. The river originates in China at Jingxi County (靖西县) in the Chongshan Mountain Range (Chóngshān jùnlǐng 崇山峻岭).

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For part of its length it runs along the Chinese–Vietnamese border, including the scenic Ban Gioc–Detian Falls.