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 from the Mạc royal family members fled towards the northern mountains within the province of Cao Bằng and ongoing to rule there until https://vitnam98643.win-blog.com/11267790/việt-nam-an-overview