In 968, Dinh Bo Linh ascended to the throne and took the name of King Dinh Tien Hoang and reunified the country under the name of Dai Co Viet.|
According to Vietnamese annals, Dinh Bo Linh, of peasant ancestry, was the adopted son of a feudal lord, the prefect of Hoa Lu. He was one of 12 chieftains among whom was divided Nam Viet, which consisted of northern Vietnam and three central Vietnamese provinces. Dinh Bo Linh defeated each of the other 11 lords and by 968 had gained control of all Nam Viet. Proclaiming himself emperor, he called the reunited country Dai Co Viet.
Well aware of the new Chinese Song Dynasty's military might, in 972 Dinh Bo Linh sent a tribute mission to to the Chinese Emperor Taizu of the Song. Taizu subsequently recognized the Vietnamese ruler and Vietnam gained relative independence in exchange for tributes sent to China every few years.