Bleeding with real fire will have some effect. Generally speaking, the so-called excessive internal heat is actually a virtual fire, which is caused by the coldness of the body and the lack of yang. You can cook ginger with jujube soup and add some brown sugar to drink, which can relieve colds.

Bloodletting therapy is a treatment that lacks clinical research, and there are so-called bloodletting therapies in the early medical history all over the world.

Bloodletting therapy in traditional Chinese medicine is a therapeutic method to release a small amount of blood by needling some acupoints or superficial veins. During the operation, the skin was disinfected routinely, and a triangular needle or a thick filiform needle was used for quick puncture and quick withdrawal. Generally speaking, it is not advisable to puncture too deeply. Commonly used for heatstroke, headache, sore throat, furuncle, low back pain, etc.