《黄帝内经·素问·刺法论》
大肠的职能，比如传导，变化糟粕，由此而出，可以刺手阳明大肠脉的原穴。
大肠者传道之官，变化出焉，可刺大肠之源。
The function of the large intestine is like a transportation channel, changing impurities originates from it; it can dredge the original acupoints of the Hand Yangming Large Intestine Meridian.