《旧五代史·后唐·皇纪上》
又曾和鞑靼人比赛，鞑靼人指着空中双雕说： 你能一发射中吗？ 
又尝与达靼部人角胜，达靼指双雕于空曰： 公能一发中否？ 
He also competed with the Tartars. The Tartars pointed to a pair of eagles in the air and said, "Can you shoot them down with one shot?"