Liaoyang (1370) — the same event in Goryeosa and Goryeosa Jeolyo

Goryeosa: Yi Seong-gye, with Ji Yong-su and others, reaches Uiju, lays a pontoon bridge, crosses the Amnok River and suddenly attacks and takes…

What each source says

Goryeosa (History of Goryeo) · AD 1370 · 遼陽

Yi Seong-gye, with Ji Yong-su and others, reaches Uiju, lays a pontoon bridge, crosses the Amnok River and suddenly attacks and takes Yoseong.

十一月丁亥,我太祖與池龍壽等,至義州,造浮橋,渡鴨綠江,己丑,進襲遼城,急攻拔之。
Location: 世家 卷42 恭愍 十九年

Goryeosa Jeolyo (Essentials of Goryeo History) · AD 1370 · 遼陽

November 1370: crossing the Amnok River from Uiju by pontoon bridge, Yi reaches Najangtap with only seven days' provisions and raids Yoseong with 3,000 cavalry

進襲遼城。
Location: 권29 恭愍王 十九年

Place: 東京

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