《史记·十二本纪·孝文本纪》
由于他认为公孙臣上书所说是不正确的，所以要求不采纳公孙臣的建议。十五年，黄龙出现在成纪，皇帝又一次召见鲁地的公孙臣，任命他担任博士，阐明当今应为土德的道理。
十五年，黄龙见成纪，天子乃复召鲁公孙臣，以为博士，申明土德事。
Since he believed that what Gongsun Chen said in his memorial was incorrect, he requested that Gongsun Chen’s suggestions not be adopted. In the fifteenth year, a Yellow Dragon appeared in Chengji. The emperor once again summoned Gongsun Chen from the state of Lu, appointed him as a doctor, and asked him to explain why the current period should be the Earth Phase.