NOT KNOWN FACTS ABOUT 6623

The civil war among the Lê-Trịnh and Mạc dynasties ended in 1592, when the army of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors of your Mạc royal relatives fled to your northern mountains while in the province of Cao Bằng and continued to rule there right until 1677 when Trịnh Tạc conquered this very las