This Chapter from The Yellow Emperor’s Classic of Internal Medicine, specifically The Spiritual Pivot chapter on official needling techniques (官针). It details various needling methods, emphasizing the crucial importance of correct needle selection and depth to avoid harming the patient. Nine primary needling techniques and twelve specific methods are described, along with adjustments based on pulse depth and a three-layer approach targeting different disease levels. Finally, five needling techniques are correlated to the five zang organs. The overall focus is on achieving therapeutic efficacy while minimizing risk in acupuncture practice.