The civil war between the Lê-Trịnh and Mạc dynasties resulted in 1592, when the army of Trịnh Tùng conquered Hanoi and executed king Mạc Mậu Hợp. Survivors in the Mạc royal spouse and children fled to your northern mountains in the province of Cao Bằng and continued to rule there https://jaredszekp.therainblog.com/30240084/the-smart-trick-of-gk88-that-nobody-is-discussing