《汉书·传·韩彭英卢吴传》
汉王说： 谁能为我出使淮南，让他起兵背叛楚国，把项王拖住在齐地几个月，我夺取天下就完全有把握了。 
汉王曰： 孰能为我使淮南，使之发兵背楚，留项王于齐数月，我之取天下可以万全。 
The King of Han said: Who can go to Huainan as an envoy for me and get them to raise troops and betray the state of Chu, and keep Xiang Yu tied up in Qi for a few months, then I will be completely sure of taking over the world.