History of Song: The Xia broke their earlier pact and asked to build a fortress at Suizhou; it was not traded for two strongholds, so the town was…
The Xia broke their earlier pact and asked to build a fortress at Suizhou; it was not traded for two strongholds, so the town was renamed Suidecheng.
夏人渝初盟，禼請城綏州，不以易二砦，因改名綏德城。
Location: 宋史卷014 熙寧二年
Li asks that, since the Xia people broke the covenant, a city be built at Suizhou, but not in exchange for the two stockades; this is followed, and the city is renamed Suide fortress.
離以夏人渝盟，請城綏州，不以易二砦；從之，改名綏德城。
Location: 續資治通鑑 卷067 (1069년 조)
A and B are two of the sources listed above.
| On what point | Source A | Source B | What differs (in Korean) |
|---|---|---|---|
| Who | History of Song (Songshi), Annals | Xu Zizhi Tongjian (Continuation of the Comprehensive Mirror) | a는 하인이 청함, b는 이(離)가 청함 |