《太平广记·卷二百九十七·神七》
隋文帝开皇末年，有一位老翁去拜见唐高祖李渊，他的相貌很不一般。
隋开皇末。有老翁诣唐高祖神尧帝，状貌甚异。
At the end of Emperor Wen of Sui Dynasty's reign, an old man went to visit Emperor Gaozu of Tang Dynasty, and his appearance was very unusual.