《魏书·列传·卷四十六》
永平初年，徐州城人成景隽在宿豫谋反，帝诏杨椿率领四万兵马讨伐敌人，无功而返。
永平初，徐州城人成景俊以宿豫叛，诏椿率众四万讨之，不克而返。
In the early years of Yongping, Cheng Jingjun, a native of Xuzhou, rebelled in Suyu. The emperor ordered Yang Chun to lead an army of 40,000 to attack the enemy, but he returned without success.