5 to 10 minutes. Amomum villosum is an aromatic medicine that dehumidifies. If the decoction time is too long, the effect of dehumidification will be reduced. It is best to decoct for 5 to 10 minutes. Amomum villosum is the dried and mature fruit of Yangchun Sha, Green Shell Sha or Hainan Sha of Zingiberaceae. Amomum villosum is a warm medicine with pungent taste. Returns to the spleen, stomach and kidney meridians. The chemical components of amomum villosum include volatile oil, flavonoids, trace elements, etc.