《旧五代史·后周·列传四》
当王峻犯罪法办后，太祖派自己的儿子飞龙使郭从诲前往邺都，令他口头传告王峻的罪恶，以安王殷的心。
及王峻得罪，太祖遣其子飞龙使承诲往鄴，令口谕峻之过恶，以慰其心。
When Wang Jun was convicted, the emperor sent his son, the Flying Dragon Envoy Guo Conghai, to Yedu and ordered him to give a verbal account of Wang Jun's crimes to comfort Wang Yin.