ABOUT 6623

The civil war involving the Lê-Trịnh and Mạc dynasties resulted in 1592, when the military of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors of the Mạc royal family fled to your northern mountains inside the province of Cao Bằng and ongoing to rule there until eventually 1677 when Trịnh Tạc conquered this