Qingpi has the effect of dispersing the liver and breaking down qi, eliminating stagnation and resolving stagnation. Qingpi is a kind of Chinese medicine for promoting the flow of qi. It is the peel of the dried young fruits or immature fruits of tangerine and its cultivated varieties in the family of Rutaceae. It is warm in nature, bitter and pungent in flavor, and belongs to the liver, gallbladder and stomach meridians, with the effect of dispersing the liver and breaking qi, eliminating stagnation. Qingpi is pungent and warm, and mainly enters the liver meridian. It is used to relieve liver stagnation and break stagnant qi, and is suitable for the swelling and pain in the chest and ribs caused by liver qi stagnation (poor transportation of qi and blood in the liver and depression), breast swelling and pain and hernia pain, etc. It is also used for the pain in the chest and ribs caused by liver qi stagnation. Its action disperses bitterness and descends into the stomach meridian, which is suitable for food stagnation (food that is poorly digested and stagnates in the stomach) stagnation of qi, and distension and pain in the epigastrium (abdomen). The adverse effects of Qingpi are not clear, its nature is strong and consumes qi, so pregnant women and people with qi deficiency should be cautious. If there is a need for medication, it is recommended that it be used under the guidance of a professional physician, not self-medication.