《资治通鉴·后周纪·后周纪五》
后周世宗诏令左散骑常侍须城人艾颍等三十四人分别视察各州，按地多少均衡确定田租。
诏左散骑常侍须城艾颍等三十四人分行诸州，均定田租。
The Later Zhou Shizong ordered Xu Chengren Aiying and thirty-four others from the Left Sanqi Regular Attendant to inspect various states and determine the land rent according to the amount of land.