Xijing (1010) — the same event in Goryeosa and Goryeosa Jeolyo

Goryeosa: The Khitan army reaches Seogyeong and burns the pagoda of Jungheung Temple.; Goryeosa Jeolyo: The Khitan besiege Seogyeong, their ruler…

What each source says

Goryeosa (History of Goryeo) · AD 1010 · 평양

The Khitan army reaches Seogyeong and burns the pagoda of Jungheung Temple.

癸丑，丹兵至西京，焚中興寺塔。
Location: 世家卷4 顯宗元年

Goryeosa Jeolyo (Essentials of Goryeo History) · AD 1010 · 平壤

The Khitan besiege Seogyeong, their ruler camping at a temple west of the city; vice-governor Won Jong-seok and others write a letter of surrender, and general Dae Do-su leaves the city and surrenders to the Khitan

於是，城中將士登城以望，競出逐之，至馬灘，丹兵回軍，擊敗之，遂圍城，丹主次于城西佛寺。
Location: 권3 顯宗元文大王元年

Place: 평양 · 平壤

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