The civil war amongst the Lê-Trịnh and Mạc dynasties led to 1592, when the military of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors in the Mạc royal family members fled towards the northern mountains in the province of Cao Bằng and continued to rule there until https://vf55587542.therainblog.com/30213648/vf555-fundamentals-explained