Battle of Maquan (499) — the same event in Book of Southern Qi, History of the Southern Dynasties and Book of Wei
Book of Southern Qi: Grand Commandant Chen Xianda is badly defeated at Maquan; History of the Southern Dynasties: Grand Commandant Chen Xianda was…
What each source says
Grand Commandant Chen Xianda is badly defeated at Maquan
是月，太尉陳顯達敗績於馬圈
Location: 南齊書 卷7 永元1年
Grand Commandant Chen Xianda was defeated at Maquan.
太尉陳顯達敗績于馬圈
Location: 南史 卷5 永元1年
At Maquan he defeated the Qi army of Chen Xianda.
丁酉，車駕至馬圈。
Location: 魏書卷7下·太和二十三年