Vertically 0.1–0.2 cun or prick to bleed.
Caution: Painful point.
Zhongchong P-9's main function is to clear various Heat, regardless being Exterior or Interior Heat.
In acute situation, the Exterior Heat penetrates the Defensive Qi and invades the Nutritive Qi Level of the Four Levels Theory. The typical symptoms are fever and loss of consciousness.
In chronic situation, the Interior Heat gives rise to mental disorders such as anxiety, agitation, palpitation and insomnia. Thus it calms the Mind.
Together with other Well points of the hand, Zhongchong P-9 is also used to expel Interior Wind and regain consciousness, especially for patients under acute Wind-stroke attack.