Battle of Gangdongseong (1218) — the same event in Goryeosa and Goryeosa Jeolyo

Goryeosa: The Mongol commanders Hap-jin and Chal-lal and the Eastern Jin force of Wanyan Ja-yeon, citing the suppression of the Khitan remnants…

What each source says

Goryeosa (History of Goryeo) · AD 1218 · 강동

The Mongol commanders Hap-jin and Chal-lal and the Eastern Jin force of Wanyan Ja-yeon, citing the suppression of the Khitan remnants, defeat the four castles of Hwa, Maeng, Sun and Deok and head for Gangdong Fortress.

十二月己亥朔,蒙古元帥哈眞及札刺,率兵一萬,與東眞萬奴所遣完顔子淵兵二萬,聲言討丹賊,攻和、猛、順、德四城,破之,直指江東城。
Location: 世家 卷22 高宗 五年

Goryeosa Jeolyo (Essentials of Goryeo History) · AD 1218 · 江東

December 1218: Mongol commanders Hajin and Chala with 10,000 men and Jin's Wanyan Ziyan with 20,000, claiming to attack the Khitan, break the four fortresses of Hwa, Maeng, Sun and Deok and head straight for Gangdongseong; heavy snow cuts off their provisions

直指江東城。
Location: 권15 高宗 五年

Where the sources differ

A and B are two of the sources listed above.

On what pointSource ASource BWhat differs (in Korean)
NumbersGoryeosa (History of Goryeo)Goryeosa Jeolyo (Essentials of Goryeo History)a는 수를 적지 않음 / b 몽골 1만·동진 2만
OutcomeGoryeosa (History of Goryeo)Goryeosa Jeolyo (Essentials of Goryeo History)b만 큰 눈에 군량 끊김을 적음

Place: 강동 · 江東

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