The civil war involving the Lê-Trịnh and Mạc dynasties ended in 1592, when the army of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors in the Mạc royal relatives fled on the northern mountains inside the province of Cao Bằng and continued to rule there till 1677 https://popeo529dkp3.blogunok.com/profile