Book of Han: The Hong Canal treaty: the world was divided in two, the land west of the Hong Canal going to Han and the east to Chu, and the father of…
The Hong Canal treaty: the world was divided in two, the land west of the Hong Canal going to Han and the east to Chu, and the father of the king and the Empress Lü were returned.
羽乃與漢約，中分天下，割鴻溝以西為漢，以東為楚
Location: 漢書卷001 漢高祖四年九月
Chu and Han agreed to divide the world along the Hong Canal; Xiang Yu returned the King of Han's parents and wife and children, and then went back east.
漢王復使侯公往說項王，項王乃與漢約，中分天下，割鴻溝以西者為漢，鴻溝而東者為楚。
Location: 史記卷007 項羽本紀
Xiang Yu's food ran out and Han Xin attacked; through Hou Gong he recovered his father, Taigong, and they agreed to divide the world along the Hongou canal, Han to the west and Chu to the east; in the ninth month the Chu army withdrew eastward.
項羽自知少助；食盡，韓信又進兵擊楚，羽患之。
Location: 資治通鑑 卷010 (원문 단락 #746, -203년)