Exploiting the Trịnh brothers' quarrel, Mạc Kính Điển landed in Thanh Hóa with over 100,000 men and 700 boats; Trịnh Cối went over to him, but Trịnh Tùng held the Yên Trường lines with sham walls and night raids until the Mạc withdrew at year's end.
War
Mạc invasion of Thanh Hóa and Trịnh Cối's surrender
- 1570
- Southeast Asia
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