《北齐书·列传·卷五十》
逭一年十二月，世祖住在干寿殿养病，士开到宫内侍奉送药。
其年十二月，世祖寝疾于干寿殿，士开入侍医药。
In the twelfth month of Yong An, the Shizu lived in the Ganshou Palace to recuperate from an illness. Shi Kai went to the palace to serve and deliver medicine.