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 from the Mạc royal loved ones fled on the northern mountains from the province of Cao Bằng and ongoing to rule there until https://vi-t-nam00875.dbblog.net/4337150/the-basic-principles-of-việt-nam