6623 Secrets
The civil war involving the Lê-Trịnh and Mạc dynasties ended in 1592, when the military of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors in the Mạc royal spouse and children fled on the northern mountains from the province of Cao Bằng and continued to rule there until finally 1677 when Trịnh Tạc conquered