《智囊(选录)·兵智部·田单》
田单听说此事，就施行反间计，在燕国散布谣言，说： 齐王已经去世，攻不下的城池只有莒和即墨两城罢了。
田单闻之，乃纵反间于燕，宣言曰： 齐王已死，城之不拔者二耳。
When Tian Dan heard about this, he resorted to a countermeasure, spreading rumors in the state of Yan, saying that King Qi had passed away and only the cities of Ju and Jimo remained unconquered.