《旧五代史·后唐·列传十四》
四年夏天，明宗商议祭天的事，派客省使李仁矩带诏书告诉两川，又派安重诲写信给董璋，征收进贡物品，约好以五十万为数目，不久董璋申诉说地方狭小、百姓贫穷，只答应进贡十万而已。
四年夏，时明宗将议郊天，遣客省使李仁矩赍诏示谕两川，又遣安重诲驰书于璋，以征贡奉，约以五十万为数。既而璋诉以地狭民贫，许贡十万而已。
In the summer of the fourth year, Mingzong discussed the matter of offering sacrifices to heaven and sent the minister of the guest house, Li Renju, to send edicts to the two rivers. He also sent An Chonghui to write a letter to Dong Zhang demanding tribute, and settled on a figure of 500,000. Soon after, Dong Zhang complained that the land was small and the people were poor, and only agreed to contribute 100,000.