《资治通鉴·汉纪·汉纪三十八》
章帝下诏，命沛王、济南王、东平王和中山王朝拜时不唱名。四王上殿后才向章帝叩拜，章帝则亲自还礼，以显示对他们的恩宠和给予的荣耀，超过了前代。
诏沛、济南、东平、中山王赞拜不名，升殿乃拜，上亲答之，所以宠光荣显，加于前古。
Emperor Zhang issued an imperial edict, ordering the King of Pei, the King of Ji'nan, the King of Dongping and the King of Zhongshan not to sing their names when they worshipped. After the four kings entered the hall, they kowtowed to Emperor Zhang, and Emperor Zhang personally returned the gift to show his favor and honor to them, which surpassed that of the previous generation.