The civil war involving the Lê-Tr?nh and M?c dynasties resulted in 1592, when the army of Tr?nh Tùng conquered Hanoi and executed king M?c M?u H?p. Survivors with the M?c royal spouse and children fled for the northern mountains during the province of Cao B?ng and continued to rule there right until 1677 when Tr?nh T?c conquered this past M?c ter