《魏书·帝纪·卷四》
二十二日，世祖下诏命兼大鸿胪卿崔赜持节拜征虏将军杨难当为征南大将军、仪同三司，封南秦王。
戊午，诏兼大鸿胪卿崔赜持节拜征虏将军杨难当为征南大将军、仪同三司，封南秦王。
On the 22nd day, the Emperor Shizu issued an imperial decree ordering Cui Ze, the acting official in charge of the Ministry of Ceremonials, to take an imperial writing and appoint General Yang Nanddang, who had been attacking and capturing the enemy, as the Grand General for Subduing the South and General in Command of the Three Departments, and to enfeoff him as the King of South Qin.