《北史·列传·卷五十九》
自妃元氏死后，云昭训独断东宫内政，献皇后更加不高兴，多次追究杨勇的罪过。
又自妃薨，云昭训专擅内政，后弥不平，颇求勇罪过。
After the death of Concubine Yuan, Consort Yun took over the internal affairs of the eastern palace, making Empress Xian even more unhappy, and repeatedly pursuing Yang Yong's guilt.