Battle of Fengzhou (865) — the same event in Đại Việt sử ký toàn thư and Zizhi Tongjian

Đại Việt sử ký toàn thư: Gao Pian raided 50,000 Man tribesmen of Phong Châu from Nam Định and defeated them heavily.; Zizhi Tongjian: Gao Pian…

What each source says

Đại Việt sử ký toàn thư · AD 865

Gao Pian raided 50,000 Man tribesmen of Phong Châu from Nam Định and defeated them heavily.

九月，駢至南定，峯州蠻眾近五萬方穫田禾，駢掩擊，大破之，斬張詮等，收其所穫以食軍。
Location: 外紀卷之五 「乙酉秋七月，駢治兵於海門未進。監」

Zizhi Tongjian (Comprehensive Mirror) · AD 865 · 峰州

Gao Pian ambushes and crushes the Man troops of Fengzhou, fifty thousand strong.

九月，駢至南定，峰州蠻眾近五萬，方獲田，駢掩擊，大破之，收其所獲以食軍。
Location: 資治通鑑 卷250

Place: Phong Châu

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