A SECRET WEAPON FOR 6623

The civil war involving the Lê-Trịnh and Mạc dynasties ended in 1592, when the army of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors from the Mạc royal loved ones fled to the northern mountains within the province of Cao Bằng and ongoing to rule there right up until 1677 when Trịnh Tạc conquered this fina