The civil war in between the Lê-Trịnh and Mạc dynasties ended in 1592, when the military of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors with the Mạc royal loved ones fled towards the northern mountains during the province of Cao Bằng and continued to rule there https://662399754.tkzblog.com/30906453/vf555-fundamentals-explained