《旧唐书·本纪·卷十七》
皇上性格仁爱孝敬，到三宫向三位太后问安，情感忠厚对待态度完全一样。
帝性仁孝，三宫问安，其情如一。
The Emperor had a kind and filial personality. He went to the Three Palaces to greet the three Empresses Dowager. He treated them equally with loyalty and sincerity.