《汉书·传·王贡两龚鲍传》
现今大王巡幸方与县，不到半天就奔驰二百里，很多百姓都荒废了农事来修路牵马，臣下以为，百姓不可多变。
盖伤之也。今者大王幸方与，曾不半日而驰二百里，百姓颇废耕桑，治道牵马，臣愚以为民不可数变。
At present, the great king's tour is the same as that of the county. In less than half a day, he galloped two hundred miles. Many people have abandoned farming to repair roads and lead horses. The minister thinks that the people should not be changed too much.