Quây Sơn River

The Quây Sơn River (Vietnamese: Sông Quây Sơn, Sông Quế Sơn; chữ Nôm: 滝𡇸山, 滝桂山)^[1] or the Guichun River in China, (Chinese: 归春河, Pinyin: ) is a river that passes through Cao Bằng Province, Vietnam and Guangxi province, China.^[2] The river originates in China in Jingxi County in the Chongshan Mountain Range (Chinese:崇山峻岭, Pinyin: Chóngshān jùnlǐng).^[3]

Quây Sơn or Guichun River - the Vietnamese side photographed from the Chinese side in the foreground.

Quây Sơn River

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