《黄帝内经·灵枢·刺节真邪》
采用针刺治病，主要在于调节气机，人气来源于水谷，水谷之气首先积蓄于胃中，化生的营气和卫气内外交通，并各自在各自的道路运行全身。
用针之类，在于调气，气积于胃，以通营卫，各行其道。
The main purpose of acupuncture is to regulate the qi mechanism. Human qi comes from food and drink, which is first accumulated in the stomach, and the transformed nutrient qi and defensive qi circulate both inside and outside, each running through the whole body in its own way.