《北齐书·列传·卷三十八》
孝昭掌握朝廷大权，群臣大多秘密劝他当皇帝，彦深却不劝进。
孝昭既执朝权，□臣密多劝进，彦深独不致言。
When Xiaozhao was in a position of great power in the court, most of the ministers secretly advised him to assume the throne, but Yanshen did not advise this.