Book of Northern Qi: Gao Huan besieged Western Wei's Yubi City, attacking with earthen mounds, tunnels and waterway approaches, but Wei Xiaokuan held…
Gao Huan besieged Western Wei's Yubi City, attacking with earthen mounds, tunnels and waterway approaches, but Wei Xiaokuan held out. After 50 days 70,000 of his men had died, and in the 11th month he withdrew, sick (Battle of Yubi).
九月，神武圍玉壁以挑西師，不敢應
Location: 北齊書 卷2
Gao Huan attacked Yubi, held by Wei Xiaokuan, for fifty days without taking it, lost seventy thousand men whose bodies formed a mound, and withdrew sick.
頓軍五旬，城不拔，死者七萬人，聚為一冢
Location: 北史 卷6 武定4年
Qi Shenwu besieges Yubi for 60 days, but Wei Xiaokuan holds out; Qi loses 20 to 30 percent of its men, he falls ill, burns his camp and withdraws
九月，齊神武圍玉壁，大都督韋孝寬力戰拒守，齊神武攻圍六旬不能下，其士卒死者什二三。
Location: 周書 卷2 大統12年9月
Eastern Wei's Gao Huan attacks Yubi for fifty days, but Wei Xiaokuan holds it; Eastern Wei suffers 70,000 casualties and lifts the siege (November).
東魏苦攻凡五十日，士卒戰及病死者七萬人，共為一塚
Location: 卷159
A and B are two of the sources listed above.
| On what point | Source A | Source B | What differs (in Korean) |
|---|---|---|---|
| Numbers | Book of Zhou (Zhoushu), Imperial Annals | Zizhi Tongjian (Comprehensive Mirror) | a는 60일 포위·병사 2~3할 손실, b는 50일 공격·7만 사상 |
Place: 玉壁(稷山)
Show on the map — open Book of Northern Qi (Bei Qishu), Annals