The Yellow Emperor's Classic of Internal Medicine, specifically Chapter 52, details the dangers of improper acupuncture techniques. Qi Bo, responding to the Yellow Emperor's inquiry, outlines numerous vital areas where needling is prohibited, specifying the potentially fatal consequences of such actions. He lists various organs and areas, explaining the resulting harm from incorrect needle placement, including death, blindness, paralysis, and other debilitating conditions. The text emphasizes the critical importance of anatomical knowledge and careful technique in acupuncture to avoid causing harm to the patient. Finally, it advises against needling patients under specific circumstances, such as intoxication, anger, or extreme states of fatigue or hunger.