The civil war amongst 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 family members fled into the northern mountains in the province of Cao Bằng and ongoing to rule there right https://vonx852msx7.nico-wiki.com/user