Old Book of Tang: Li Su entered Caizhou, captured Wu Yuanji and presented him, and Huaixi was pacified.; New Book of Tang: Li Su captured Caizhou; Wu…
Li Su entered Caizhou, captured Wu Yuanji and presented him, and Huaixi was pacified.
己卯、隨、唐節度使李愬率師入蔡州，執吳元濟以獻，淮西平。
Location: 舊唐書 卷15 元和12年 10月
Li Su captured Caizhou; Wu Yuanji was executed in the eleventh month, pacifying Huaixi.
癸酉，克蔡州
Location: 新唐書 卷007 德宗·順宗·憲宗 元和12年10月
The Huaixi field headquarters reports the capture of Wu Yuanji.
己卯，淮西行營奏獲吳元濟，光祿少卿楊元卿言於上曰：「淮西大有珍寶，臣能知之，往取必得。
Location: 資治通鑑 卷240