Pyongyang (613) — the same event in History of the Northern Dynasties and Book of Sui

History of the Northern Dynasties: The emperor crossed the Liao and sent Yuwen Shu and Yang Yichen against the walls of Pyeongyang (second…

What each source says

History of the Northern Dynasties (Beishi), Annals · AD 613 · 平壤

The emperor crossed the Liao and sent Yuwen Shu and Yang Yichen against the walls of Pyeongyang (second expedition).

庚午，車駕度遼。壬申，遣宇文述、楊義臣趣平壤城
Location: 北史 卷12 大業9年

Book of Sui (Suishu), Imperial Annals · AD 613 · 平壤

He sent Yuwen Shu and Yang Yichen toward Pyongyang.

遣宇文述、楊義臣趣平壤
Location: 隋書 卷004 帝紀 大業9年4月

Place: 平壤

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