Each time he finishes harvesting, the weeding is still asking for careful attention. Because roots that haven't been fermented cannot be left in the land as fertilizer, they must be pulled out one by one, and he can't hire anyone who's willing to do it.
每一次摘完菜，「清源」工作都要做仔細，因為未經過發酵的菜葉、菜根不能留在田裡變成堆肥，也要一根根拔除。