Acupoints on the different parts of the body surface vary in regulating the autonomic nervous system (ANS). exhibiting differences in the acupoint specificity in terms of the distributing directions of sympathetic and parasympathetic branches. The paper introduces the rules of acupoints on the corresponding body surfaces in modulating ANS based on their location at four limbs. abdomen. https://www.shopmillensiumers.shop/product-category/water/