《史记·七十列传·匈奴列传》
追逐着水草而迁移，没有城镇常居之地和农耕生产，但是也各自有分占的牧地。
逐水草迁徙，毋城郭常处耕田之业，然亦各有分地。
They followed the water and grass as they migrated, and they had no permanent towns or farming, but they each had their own pastures.