Old History of the Five Dynasties: The Khitan Prince of Yongkang, Wu Yu, led his tribes in two columns into the frontier and attacked Neiqiu city for…
The Khitan Prince of Yongkang, Wu Yu, led his tribes in two columns into the frontier and attacked Neiqiu city for five days but could not take it.
時契丹永康王烏裕率部族兩道入邊，內丘城小而固，契丹攻之，五日不下，敵人傷者甚眾。
Location: 舊五代史 卷103
The Khitan, with tens of thousands of cavalry, attack Neiqiu for five days without winning; Guo Wei leads a great army to the field.
契丹主將數萬騎入寇，攻內丘，五日不克
Location: 資治通鑑 卷289 제70단(머리글 이후 비공백 줄 기준)
Place: 內丘
Show on the map — open Old History of the Five Dynasties (Jiu Wudai shi), Annals