Traditional Chinese medicine generally grows in places with good natural state. Basically, there is only the condition of Jixian compound.
Traditional Chinese Medicine: Jujube, Lycium barbarum, Pollen Typhae, Lotus Root Festival, Reed Root, Dandelion, Viola yedoensis, etc. Are very common. But large-scale cultivation did not. . . Authentic medicinal materials have nothing to do with air transmission.