《资治通鉴·后唐纪·后唐纪八》
丙申，未帝任命前安国节度使、同平章事赵凤为太子太保。
丙申，以前安国节度使、同平章事赵凤为太子太保。
Bingshen (day 2), the Last Emperor appointed Zhao Feng, former An Kingdom Military Governor, in the position of Assistant Minister, to be Prince's Grand Guardian.