The civil war between the Lê-Tr?nh and M?c dynasties resulted in 1592, when the military of Tr?nh Tùng conquered Hanoi and executed king M?c M?u H?p. Survivors with the M?c royal household fled for the northern mountains within the province of Cao B?ng and ongoing to rule there until eventually 1677 when Tr?nh T?c conquered this previous M?c terr