《旧唐书·本纪·卷二十》
皇上害怕，下楼和亲王、公主、宫人共几百人临幸永兴坊李筠的军营中。
上惧，下楼与亲王、公主、内人数百幸永兴坊李筠营。
The emperor was frightened and went downstairs with the princes, princesses, and hundreds of palace officials to visit Li Yun's military camp in Yongxingfang.