Daxin County bus terminal
|Coordinates: 22°29′N 106°39′E / 22.483°N 106.650°E|
|• Total||2,742 km2 (1,059 sq mi)|
|Time zone||China Standard (UTC+8)|
The southwest border of Daxin County is along Cao Bằng Province, Vietnam. The legal description is mainly determined for a part of its length by the midline of the watercourse along the Guichun River and its Detian Falls.