Kết Thuế

Kết Thuế was the name of a district in southern Thanh Hóa during the Ming occupation of Vietnam. The country lies between the coastal plain and the hills that separate Thanh Hóa from Nghệ An. Rivers descend from the western highlands to the sea, crossing a narrow stretch of lowland. Its position on the coast placed it along the route between northern and central Vietnam.

The later city of Nghi Sơn lies here.