History of the Northern Dynasties: The emperor personally led six commanderies and took Heyin's great city of Northern Qi, but could not break the…
The emperor personally led six commanderies and took Heyin's great city of Northern Qi, but could not break the inner walls; he fell ill and withdrew in the ninth month.
丁未，上親帥諸軍，攻拔河陰大城
Location: 北史 卷10 建德4年
Emperor Wu takes the great city of Heyin with 60,000 men but cannot break the inner citadel; he falls ill and withdraws at night in the ninth month. Yuwen Xian and others take over 30 cities but abandon them and return (second campaign)
丁未，上親率諸軍攻河陰大城，拔之。
Location: 周書 卷6 建德4年8月
Place: 河陰(孟津)
Show on the map — open History of the Northern Dynasties (Beishi), Annals