《资治通鉴·隋纪·隋纪六》
炀帝开始认为这个意见很好，宇文述说： 跟从车驾的官员家属大都在东都，最好就便道到洛阳去，从潼关进入。 
帝初然之。宇文述曰： 从官妻子多在东都，宜便道向洛阳，自潼关而入。 
Yangdi initially thought this was a good idea, but Yuwen Shu said, "The families of the officials following the imperial carriage are mostly in the Eastern Capital, and it is better to go to Luoyang by way of convenience, via Tongguan Pass.