Xijing (1176) — the same event in Goryeosa and Goryeosa Jeolyo

Goryeosa: Yun In-cheom crushes Seogyeong and captures and kills Jo Wi-chong.; Goryeosa Jeolyo: 1176: Yun In-cheom attacks Seogyeong's Tongyangmun and…

What each source says

Goryeosa (History of Goryeo) · AD 1176 · 평양

Yun In-cheom crushes Seogyeong and captures and kills Jo Wi-chong.

尹鱗瞻攻破西京，擒位寵殺之，遣人來告捷。
Location: 世家卷19 明宗六年

Goryeosa Jeolyo (Essentials of Goryeo History) · AD 1176 · 平壤

1176: Yun In-cheom attacks Seogyeong's Tongyangmun and Du Gyeong-seung the Daedongmun, and the city largely collapses; Jo Wi-chong is captured and beheaded, his head sent to Gaegyeong for public display

○尹鱗瞻攻西京通陽門，杜景升攻大同門，破之，城中大潰，擒位寵斬之，囚其黨十餘人，餘皆慰撫，居民按堵如故。
Location: 권12 明宗光孝大王六年

Place: 평양 · 平壤

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