《宋史·列传·卷三》
开宝六年，任德昭为兴元尹、山南西道节度使、检校太傅、同中书门下平章事，在太祖在世之日，一直没有给他封王。
开宝六年，授兴元尹、山南西道节度使、检校太傅、同中书门下平章事，终太祖之世，竟不封以王爵。
In the sixth year of Kaibao, De Zhao was appointed as the magistrate of Xingyuan, the Commissioner of the Shannan Western Circuit, the Inspector of Grand Tutor, and the Deputy Director of Zhongshu Menxia Pingzhangshi. Up until the death of Emperor Taizu, De Zhao was not granted the title of a king.