《北史·列传·卷二十九》
到了弘农宫，当地的父老拦住他说： 宫城空虚，又存有很多粮食，容易攻下。
至弘农宫，父老遮说玄感曰： 宫城空虚，又多积粟，攻之易下。
When he arrived at Hongnong Palace, the local elders stopped him and said: "The palace is empty and stores a lot of grain. It is easy to capture."