![](Https://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Ka_Long_Bridge_and_River.jpg/250px-Ka_Long_Bridge_and_River.jpg)
Beilun River (Chinese: 北仑河; pinyin: Běilún hé), or Ka Long River (Vietnamese: sông Ka Long), Bắc Luân River (sông Bắc Luân) is a river of Guangxi Zhuang Autonomous Region in southwest China and Quảng Ninh Province in northeast Vietnam. It runs roughly along the last stretch of the land border of the China-Vietnam border.