Battle of Tieqi Mountain (391) — the same event in History of the Northern Dynasties and Book of Wei
History of the Northern Dynasties: When Liu Weichen sent his son Zhili to strike the south, he was routed south of Tieqi Mountain; Weichen and his…
What each source says
When Liu Weichen sent his son Zhili to strike the south, he was routed south of Tieqi Mountain; Weichen and his son fled.
壬午，帝大破之於鐵歧山南，衛辰父子奔遁
Location: 北史 卷1 登國6年
South of Tieqi Mountain he crushed the army of Zhilidi; he took about two hundred thousand head of livestock.
壬午，大破直力鞮軍於鐵歧山南，獲其器械輜重，牛羊二十餘萬。
Location: 魏書卷2·登國六年