The civil war amongst the Lê-Trịnh and Mạc dynasties led to 1592, when the army of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors in the Mạc royal relatives fled for the northern mountains from the province of Cao Bằng and continued to rule there until 1677 https://marlonm307afl2.hamachiwiki.com/user