While Trịnh Tráng was away fighting the Nguyễn in the south, Mạc Kính Vũ came down from Cao Bằng and raided Thái Nguyên and Bắc Cạn.
Attack
Mạc Kính Vũ raids Thái Nguyên
- 1643
- Southeast Asia
Meanwhile, elsewhere
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