Nhật Nam

Nhật Nam lies in the coastal country of Hà Tĩnh, where the Annamite mountains approach the sea and river valleys open onto a narrow plain. Under the Trần dynasty, Nhật Nam was a name used for a district in the wider Nghệ An region. The mountains and coastal lowlands formed part of Đại Việt's southern approaches, through which rivers descended from the interior towards the Gulf of Tonkin.

The later city of Hà Tĩnh lies here.