《汉书·传·张冯汲郑传》
武帝刘彻登上帝位，郑庄先后调升为鲁国的中尉、济南郡的太守、江都国的相，一直升到九卿担任右内史。
武帝即位，当时稍迁为鲁中尉，济南太守，江都相，至九卿为右内史。
When Emperor Wu of Han ascended the throne, Zheng Zhuang was successively promoted to the lieutenant of the State of Lu, the prefect of the Ji'nan County, the prime minister of the State of Jiangdu, and finally to the official of the Nine Ministers as the right-hand minister.