Planting Dendrobium candidum or Dendrobium nobile has the highest income in the market now, and the yield of purple skin per mu is relatively large, but it can only be about 120 yuan per catty. The output of iron sheet is slightly lower, but the price is around 1500 yuan. And as far as I know, Pu 'er belongs to the rainforest climate, with humid air and small temperature difference throughout the year. Pu 'er is also one of the main sites for the 12th Five-Year Plan of Dendrobium candidum planting area in Yunnan.