Two Trịnh columns under Nguyễn Hữu Đăng and Đinh Văn Tả advanced through Thái Nguyên and Lạng Sơn, took the Mục Mã citadel and, after two months, Nà Lữ; Mạc Kính Vũ fled to China and Mạc rule in Cao Bằng was broken.
Conquest
Trịnh campaign against the Mạc in Cao Bằng
- 1677
- Southeast Asia
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