《汉书·传·匡张孔马传》
史高认为杨兴讲得有理，就任命匡衡为议曹史，将他推荐给皇上，皇上让他做郎中，后升为博士，兼任给事中。
高然其言，辟衡为议曹史，荐衡于上，上以为郎中，迁博士，给事中。
Shi Gao thought what Yang Xing said made sense, so he appointed Kuang Heng as Cao Shi, and recommended him to the emperor, who made him Lang Zhong, and later promoted him to Doctor, concurrently serving as an attendant.