《宋史·本纪·卷一》
二十日，开始设置参知政事，任命兵部侍郎薛居正、吕余庆担任这个职位。
乙丑，始置参知政事，以兵部侍郎薛居正、吕余庆为之。
On the 20th day, the post of Adjunct Deliberative in State Affairs was established for the first time, and Xue居正 and Lü Yuqing, both Directors of the Ministry of War, were appointed to this position.