There is no such thing as “the best way to replenish yang deficiency”. Yang deficiency can be treated with cinnamon, which is a drug that is derived from the same source as food, as well as immortelle and horny goatweed, and so on. 1. Cinnamon has the effect of tonifying fire to help yang (replenishing yang qi in the body), inducing fire to return to the source (inhibiting the rising of fire in the kidneys), warming the meridians, dispersing cold, and relieving pain (relieving pain by removing cold from the body). This drug can be used in treating kidney yang deficiency (lack of yang qi in the kidneys), impotence and uterine cold, failure of fire in the vital organs (weakness of kidney yang in the body, with reduced function of warming and promoting the operation of qi and blood), cold pain in the waist and knees; deficiency of the kidneys as wheezing, dizziness and redness in the eyes; and vomiting and diarrhea with deficiency of cold. This product should not be used together with red stone resin, there is solid heat, yin deficiency and fire (deficiency of yin and essence in the body, hyperactive fire), bleeding tendency and pregnant women should be used with caution, the adverse effects are not clear. 2. Xianmao has the efficacy of tonifying kidney yang, dispelling cold and dampness, and strengthening tendons and bones, and can be used to treat kidney yang insufficiency, impotence and coldness of essence, failure of vital fire, frequent urination; Yang deficiency and cold diarrhea; impotence and weakness of tendons and bones, cold pain in waist and knees and other diseases. This product should not be overdosed, long service, yin deficiency fire is not recommended, adverse reactions are not clear. 3. Epimedium has the effect of tonifying the kidney and strengthening the yang (tonifying the kidney yang), dispelling wind-dampness, and strengthening the tendons and bones, which can be used to treat kidney yang deficiency (deficiency of yang qi in the kidney), impotence and weakness of the tendons and bones, impotence and spermatorrhea; wind-cold-dampness paralysis (the wind, cold, and dampness are three kinds of evils invading the human body leading to paralysis of the limbs), and numbness and constriction, etc. This product is not suitable for people with deficiency of yin and fire, and should not be taken for long. This product should not be used by people with yin deficiency and fire exuberance, and the adverse reactions are not yet clear. The above medicines should be used under the guidance of a doctor. If you feel unwell, please go to the hospital as soon as possible.