《太平广记·卷一百三十六·征应二》
唐宣宗在藩地时，曾跟着皇帝回京城，一次他不慎从马上掉下来，人们都没有发觉。
唐宣宗在藩时，常从驾回，而误坠马，人不之觉。
When Tang Xuanzong was in the vassal state, he once returned to the capital with the emperor, and once he fell off his horse accidentally, and no one noticed.