《汉书·传·匡张孔马传》
第二年进行土地统计时，匡衡问趟殷有关封地边界的事情： 负责此事的办事员想怎么办？ 
明年治计时，衡问殷国界事： 曹欲奈何？ 
During the second year, when the land was being surveyed, Kuang Heng asked Zhao Yin about the fief borders: "What do the clerks in charge of this matter intend to do?"