《史记·十二本纪·夏本纪》
粮食匮乏的时候，从有富余粮食的地区调济粮食给粮食匮乏的地区，或者叫百姓迁到有粮食的地区居住。
食少，调有余补不足，徙居。
When there is a shortage of food, food is transferred from areas with surplus food to areas with food shortages, or people are asked to move to areas with food.