江東 (1219) — the same event in History of Yuan and Goryeosa Jeolyo

History of Yuan: When the Khitan leader Liuge seized Gangdong Fortress of Goryeo, Hazhen and Zhala suppressed it, and the king of Goryeo surrendered…

What each source says

History of Yuan (Yuanshi), Annals · AD 1218 · 江東

When the Khitan leader Liuge seized Gangdong Fortress of Goryeo, Hazhen and Zhala suppressed it, and the king of Goryeo surrendered and agreed to send tribute every year.

契丹六哥據高麗江東城，命哈真、札剌率師平之；高麗王㬚遂降，請歲貢方物。
Location: 元史 卷1 太祖 1218年

Goryeosa Jeolyo (Essentials of Goryeo History) · AD 1219 · 江東

January 1219: the Khitan in Gangdongseong surrender; Hajin and Chala conclude a brotherhood pact with Jo Chung and Kim Chwi-ryeo

江東城丹賊降。
Location: 권15 高宗 六年

Where the sources differ

A and B are two of the sources listed above.

On what pointSource ASource BWhat differs (in Korean)
YearHistory of Yuan (Yuanshi), AnnalsGoryeosa Jeolyo (Essentials of Goryeo History)a는 1218년 기사, b는 1219년 정월 기사

Place: 江東

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