《北齐书·列传·卷十》
殿下衹喝造裹的水，没有吃这裹的食物，姑且表示微薄的心意。 
殿下唯饮此乡水，未食此乡食，聊献疏薄。 
Your highness only drinks the water of Zhaozhong, and has not eaten the food of Zhaozhong, so this is a small gesture to express our humble intentions.