《汉书·传·隽疏于薛平彭传》
因此，皇上以平当在讨论是否停建昌陵一事时，提出了不正确的意见为由，将平当降为钜鹿太守，后来皇上就封了淳于长。
坐前议不正，左迁钜鹿太守。后上遂封上。
Therefore, the emperor demoted 平当 to the position of administrator of Julu as he had expressed incorrect opinions during the discussion on whether to stop the construction of Changling Tomb, and later awarded a title to 淳于长.