The center of the eyebrow, corresponding to the Yin Tang point in traditional Chinese medicine, has a heavy town of tranquility (with ore, shellfish drugs to stabilize the mind), resting the wind to calm the alarm; wake up the brain to open the mind (to restore the spirit of the state of freshness) and so on. 1. Pain Relief: Yin Tang acupoint at the center of the eyebrow, belonging to the Dugu meridian point, bloodletting can be used to treat forehead Yangming meridian headache, and can be used to treat acute lumbar sprains, and to relieve pain by dredging the meridians and collaterals. 2. Tranquilizing the mind and calming the wind: Yintang acupoint belongs to the Dugu vein, and the Dugu vein enters the cranium and the brain, using the method of puncture and bloodletting to treat acute and slow convulsions (pediatric diseases with fainting, convulsions, and convulsions as the main manifestations), and epileptic seizures. 3. Wake up the brain and open the mind: bloodletting at the center of the eyebrow can evacuate the wind and cold evil qi, commonly used in the treatment of nasal aperture blockage, nasal congestion, nasal discharge, clear the orifices to relieve pain, clear the head and brighten the eyes, and set the vertigo. If there is a need for bloodletting in the center of the eyebrow, it should be used under the guidance of a doctor to avoid adverse consequences.