The civil war in between the Lê-Trịnh and Mạc dynasties resulted in 1592, when the military of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors with the Mạc royal relatives fled into the northern mountains from the province of Cao Bằng and continued to rule there right https://gunnerwchms.collectblogs.com/76389952/the-basic-principles-of-6623