Vertically 0.3–0.5 cun.
Caution: Thinner needles should be used as needling this point can be painful.
The typical manifestations of Heart Fire Blazing are heart pain, tongue ulcers, thirst, insomnia and agitation. P-8 is particularly effective for these symptoms.
It also calms the Mind, thus treats symptoms like manic behavior, fright, anxiety and mental restlessness.
Finally, it cools Blood and restores consciousness in the situation of acute febrile diseases. In these cases, the pathologic Heat invades the Nutritive Qi or Blood level of the Four Levels Theory, giving rise to impaired consciousness, agitation, mental restlessness, delirium, cold hands, night fever, dry mouth, coughing or vomiting of blood and macules.