Records of the Three Kingdoms: Cao Cao attacked Zhang Lu's army at Yangping Pass but could not take it and withdrew; a night raid then routed him…
Cao Cao attacked Zhang Lu's army at Yangping Pass but could not take it and withdrew; a night raid then routed him heavily.
張魯使弟衞與將楊昂等據陽平關，橫山築城十餘里，攻之不能拔，乃引軍還。
Location: 魏書 武帝紀 (卷01) 建安20년
In the seventh month Cao Cao reached Yangping, and Zhang Lu wished to offer Hanzhong, but his younger brother Zhang Wei guarded the pass and built a city of more than ten li on the mountain. Cao Cao believed the saying that the north and south mountains beneath Yangping city were too far to defend, and only learned on the spot that it was not so.
秋，七月，魏公操至陽平。
Location: 資治通鑑 卷067 (원문 단락 #5398, 215년)
A and B are two of the sources listed above.
| On what point | Source A | Source B | What differs (in Korean) |
|---|---|---|---|
| Outcome | Records of the Three Kingdoms (Sanguozhi) | Zizhi Tongjian (Comprehensive Mirror) | b는 장로 항복 의사와 장위 저항을 적음 |
Place: 陽平關
Show on the map — open Records of the Three Kingdoms (Sanguozhi)