《汉书·纪·武帝纪》
三月二十一日，祠汉高祖于明堂，以配享于上天。因时召见各侯王列侯，受郡国所上簿计。
甲子，祠高祖于明堂，以配上帝，因朝诸侯王、列侯，受郡国计。
On March 21, he sacrifices to Han Gaozu in Mingtang, in order to accompany him in honouring Heaven. He summons all the hou and liehou to court, and receives reports submitted by the provinces.