The reason why medicine should be steamed on sunny days is that cloudy days will bring atmospheric pressure or moisture to people's bodies. Medicinal steaming is to use the medicinal properties and warmth of traditional Chinese medicine to achieve the purpose of sweating and eliminating evil, which is helpful to improve the problem of local congestion and swelling. At the same time, it will be conditioned with some Chinese medicines, which can also help to eliminate cold and dampness and help improve moisture.