The civil war involving the Lê-Trịnh and Mạc dynasties resulted in 1592, when the army of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors in the Mạc royal loved ones fled to the northern mountains in the province of Cao Bằng and ongoing to rule there till https://damienv741jpu5.wikiparticularization.com/user