《黄帝内经·素问·刺法论》
应审察其程度的微甚与浅深，当其将要发生而可刺之时，用针刺之。
详其微甚，察其浅深，欲至而可刺，刺之。
Its intensity and severity should be examined, and acupuncture should be applied when the disease is about to happen and can be attacked with needles.