《汉书·传·傅常郑甘陈段传》
甘露年中，后将军赵充国薨，天子就任鲎墓为右将军，典属国的官职照旧。
甘露中，后将军赵充国薨，天子遂以惠为右将军，典属国如故。
During the Ganlu years, General Zhao Chongguo died, and the emperor appointed Xu Mu as General of the Right and continued to hold the post of Prefect of Dependent States.