The civil war concerning the Lê-Trịnh and Mạc dynasties resulted in 1592, when the army of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors from the Mạc royal family members fled to the northern mountains during the province of Cao Bằng and continued to rule there till https://abbies529djp3.wannawiki.com/user