The civil war among 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 from the M?c royal family members fled to your northern mountains during the province of Cao B?ng and continued to rule there till 1677 when Tr?nh T?c conquered this very last M?c territory.