《旧唐书·本纪·卷十六》
十一月二十一日，皇上从复道出城临幸华清宫，左、右卫中尉分掌仪仗，六军诸军使、诸侯王、驸马等一千多人随从，到晚上回到宫中。
己未，上由复道出城幸华清宫，左右中尉擗仗，六军诸使、诸王、驸马千余人从，至晚还宫。
On the 21st day of the 11th moon, the sovereign left the city via the Repassage Overpass and headed to the Huaqing Palace, with the lieutenants of the left and right imperial guards in charge of the imperial procession, with the directors of all the troops of the Six Armies, the feudal princes, the sons-in-law and more than a thousand others attendant, and he returned to the palace in the evening.