The civil war among the Lê-Trịnh and Mạc dynasties resulted in 1592, when the army of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors from the Mạc royal relatives fled for the northern mountains while in the province of Cao Bằng and continued to rule there right https://roselynez852lqw6.blogsumer.com/profile