《旧五代史·后唐·皇纪上》
武皇到定边军迎接献祖到云州，云州守将拒守城门不接纳。
武皇至定边军迎献祖归云州，云州守将拒关不纳。
Martial Emperor went to Dingbian Army to welcome Xianzu to Yunzhou, but the Yunzhou defenders refused to open the city gate and refused to accept him.