What is the effect of bloodletting at the ten fingers and ten Xuan points

Bloodletting at the Ten Xuan points of the ten fingers is used to treat fever, heatstroke, and pediatric convulsions, and should be done under the direction of a physician. Ten Xuan points are a combination of ten points at the fingertips of the fingers. Located on the fingertips of the ten fingers of the hand, 0.1 inches from the nail, a total of ten points. Ten Xuan points have the effect of soothing and opening the mind (to awaken from a state of unconsciousness), clearing heat and stopping spasms. It is used to treat heat stroke, fainting, coma, fever, sore throat, pediatric convulsions, and numbness of finger tips. If used for the treatment of fainting, high fever, epilepsy can be paired with Renzhong point, Yongquan point; the treatment of sore throat can be paired with Shaoshang point. The operation method of Shixuan point is to stab straight or use three-pronged needles to puncture and bleed. The contraindications for this point are not clear. It should be treated by a doctor and should not be operated by oneself.