China–Vietnam border

The border between China and Vietnam is the line that limits the territories of China and Vietnam. The land border measures about 1281 km. It starts at the Tripoint with Laos , and goes to the Gulf of Tonkin , passing in essentially mountainous areas inhabited by ethnic minorities. Whilst both sides agree on land borders, the territorial dispute over the Spratly and Paracel Islands has left maritime borders between the two nations undefined.