There is a proprietary Chinese medicine on the market called Si-Rei San (四逆散). This product has the efficacy of penetrating and resolving depressed heat, dredging the liver and regulating the spleen. The proprietary Chinese medicine Si-Yi San is composed of white peony, firewood, bran-fried Citrus aurantium, and licorice. It is mainly used in the treatment of heat syncope without warmth in the hands and feet, pain in the epigastrium (abdomen), distension and pain in the coarseness and ribs, dysentery and heaviness in the lower part of the body. In this formula, Chai Hu elevates Yang Qi, dispels Liver and resolves depression (treating depression by dispersing Liver Qi), and transmits evil out. White peony nourishes blood and softens the liver (nourishing the blood and softening the liver) and converges the yin, which is used in combination with Chai Hu to nourish liver blood and regulate liver qi, so that Chai Hu can elevate and disperse the yin and blood without depleting the yin and blood; Hovenia dulcis regulates qi and resolves depression, and releases heat and breaks up knots; Glycyrrhiza glabra regulates and harmonizes all the medicines (regulating the properties of different Chinese medicines), benefiting the spleen and harmonizing the middle. The adverse effects and contraindications of Si Reverse San are not clear. Caution should be exercised if there is deficiency of liver yin and dystocia (pain in the area of coercion and ribs). Caution should be exercised if the limbs are not warm due to cold syncope. Caution should be exercised in pregnant women. Avoid irritation and fatigue, and maintain a relaxed mood. The medication should be used under the guidance of a doctor, please do not blindly self-medication.