Battle of Guandu (200) — the same event in Book of the Later Han and Records of the Three Kingdoms

Book of the Later Han: Cao Cao fought Yuan Shao at Guandu, and Yuan Shao fled in defeat.; Records of the Three Kingdoms: Zhang He and Gao Lan…

What each source says

Book of the Later Han (Hou Hanshu), Annals · AD 200 · 官渡

Cao Cao fought Yuan Shao at Guandu, and Yuan Shao fled in defeat.

曹操與袁紹戰於官度，紹敗走。
Location: 後漢書卷9 孝獻帝紀 建安5年

Records of the Three Kingdoms (Sanguozhi) · AD 200 · 官渡

Zhang He and Gao Lan surrendered, Yuan Shao's army collapsed, and Yuan Shao and Yuan Tan crossed the Yellow River and fled.

紹衆大潰，紹及譚棄軍走，渡河。
Location: 魏書 武帝紀 (卷01) 建安5년

Place: 官渡

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