There is no such thing as a miraculous effect of bloodletting at the Commission Central Point. Bloodletting at the Commission Central Point has the function of activating blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body), dredging the meridians and collaterals, and clearing heat and cooling the blood (alleviating blood heat by clearing heat). Zhizhong point is a joint point of the foot solar bladder meridian, located at the midpoint of the popliteal transverse stripe, midway between the biceps femoris tendon and the semitendinosus tendon. It is effective for digestive disorders such as abdominal pain, acute vomiting and diarrhea, and acute gastroenteritis. Bloodletting in the middle of the commission can diarrhea heat, invigorate blood and dredge the meridians. It can be used to treat shock, stroke hemiplegia (one side of the limb can not move freely), heat stroke, lumbar and dorsal constriction (body spasms and convulsions due to the feeling of wind and cold) pain, dengtu (acute infectious disease, the skin can be seen to be red like painted) and so on. Bloodletting therapy has certain technical requirements, so patients should not use it privately, and it should be operated and treated by professional physicians.