《汉书·传·荆燕吴传》
应高回去向吴王报告了情况。吴王还担心胶西王不实现诺言，于是亲自以使者身份潜行至胶西，与刘印当面约定。
归报吴王，犹恐其不果，乃身自为使者，至胶西面约之。
Ying Gao returned to report the situation to the King of Wu. The King of Wu was still worried that the King of Jiaoxi would not fulfill his promise, so he personally disguised himself as an envoy and went to Jiaoxi to make an agreement with Liu Yin in person.