According to the Chinese Pharmacopoeia, the dosage of Cinnamomum Cassia is 1g~5g in decoction, while the dosage of Chai Hu is 3g~10g in decoction, but the exact dosage should be decided by the doctor according to the patient’s condition, so please follow the doctor’s instruction. The effects of Cinnamon are to tonify fire and assist yang, induce fire to return to the source (inhibit the rise of fire in the kidneys), warm the meridians and open the veins. It is suitable for cold pain in the waist and knees, impotence and coldness in the uterus, frequent urination at night, deficiency of yang (relative deficiency of yang qi affecting the head and face), cold hernia and abdominal pain (acute abdominal pain caused by deficiency of coldness in the internal organs and feeling of wind and cold from the outside), and so on. Caution should be exercised for those with bleeding tendency and pregnant women; it should not be used with red stone resin. The effects of Chai Hu are evacuating and relieving fever, relieving the liver to relieve depression, and elevating yang qi. It is used for treating colds and fever, cold and heat (the body is hot and cold at the same time), distension and pain in the chest and ribs, irregular menstruation, uterine prolapse and prolapse of the anus. Not to be taken if there is loss of true yin and rising liver yang.