1, the reason why Chen Pi three steamed three sun, because fresh orange peel contains volatile oils emitted, there is a strong irritating odor, through repeated steaming, so that the volatile oils evaporate. This is a way to enhance the medicinal properties of Chinese medicine.

2, the so-called steam, usually refers to steam steam across the water, the container is mostly ceramic-based, water and time depends on the nature of the medicine and the use of the medicine. In the steam, usually the water is boiled and then turned to a small fire to steam for another 15 to 30 minutes to steam through to the degree, and then take out the herbs spread sunshine, until completely dry and then repeat.

3, although the number of times of steaming and sunshine is different, but the method is the same, is a method of herbal concoction. The information said that the use of steaming and sunning method of repeated concoctions of Chinese herbs, the main purpose is to correct the herbs or increase the composition of the drug, so as to better play the efficacy of the herbs.