《后汉书·本纪·孝和孝殇帝纪》
初七，清和王刘庆、济北王刘寿、河闻王刘开、常山王刘章才初到封国。
丙戌，清河王庆、济北王寿、河间王开、常山王章始就国。
On the 7th day, Prince Liu Qing of Qinghe, Prince Liu Shou of Jibei, Prince Liu Kai of Hejian, and Prince Liu Zhang of Changshan just arrived at their enfeoffments.