The terrifying herb-collecting team

In the past, the medicinal materials in the Northeast were of good quality. In addition, the temperature difference between day and night was large, the medicinal properties of the medicinal materials grown here were better than those in the south, and the prices were much higher than those in the south.
Later, more and more medicinal herbs were planted in the south, and many medicinal herb wholesale markets were built. Gradually, more and more companies and farmers planting medicinal herbs appeared...