卫气昼行阳经二十五周，夜行阴脏二十五周。卫气之行也，常于平旦寅时，从足太阳之睛明始，
睛明在目之内 （足太阳之穴也）。平旦阳气出于目，目张则气上行于头，循项下足太阳，至小指之端；则
入目内 ，下手太阳至小指之端，别入目锐 ，下足少阳，至小指次指之端；上循手少阳之分侧，下至
名指之端；别入耳前，下足阳明，至中指之端；别入耳下，下手阳明，至次指之端；其至于足也，入足心，
出内踝下，入足少阴经。阴跷者，足少阴之别属，于目内 ，自阴跷而复合于目，交于足太阳之睛明，是谓
一周。如此者，二十五周，日入阳尽而阴受气矣。于是内入于阴脏。其入于阴也，常从足少阴之经，
而注于肾，肾注于心，心注于肺，肺注于肝，肝注于脾，脾复注于肾，是谓一周，如此者二十五周，平旦
阴尽而阳受气矣。于是外出于阳经，其出于阳也，常从肾至足少阴之经，而复合于目。卫气入于阴则寐，
出于阳则寤，一日百刻，周身五十，此卫气之度也。《难经》营卫相随之义，言营行脉中，卫行脉外，相
附而行，非谓其同行于一经也。
厥阴风木（足厥阴肝，乙木。手厥阴心主，相火。）
少阴君火（手少阴心，丁火。足少阴肾，癸水。）
少阳相火（手少阳三焦，相火。足少阳胆，甲木。）
太阴湿土（足太阴脾，己土。手太阴肺，辛金。）
阳明燥金（手阳明大肠，庚金。足阳明胃，戊土。）
太阳寒水（足太阳膀胱，壬水。手太阳小肠，丙火。）
Wei Qi (Defensive Qi) circulates twenty-five circuits through the Yang meridians during the day and twenty-five circuits through the Yin organs at night. The circulation of Wei Qi typically begins at Yin hour in the early morning, starting from Jingming (BL1, Bright Eye), an acupoint of the Foot-Taiyang Bladder Meridian. Jingming is located at the inner canthus of the eye. In the early morning, Yang Qi emerges from the eyes; when the eyes open, Qi ascends to the head, follows down the neck along the Foot-Taiyang Bladder Meridian, reaching the tip of the little toe; then it enters the inner canthus, descends to the Hand-Taiyang Small Intestine Meridian, reaching the tip of the little finger; separately entering the outer canthus, it descends to the Foot-Shaoyang Gallbladder Meridian, reaching the tip of the fourth toe; ascending along the lateral aspect of the Hand-Shaoyang Sanjiao Meridian, it descends to the tip of the ring finger; separately entering in front of the ear, it descends to the Foot-Yangming Stomach Meridian, reaching the tip of the middle toe; separately entering below the ear, it descends to the Hand-Yangming Large Intestine Meridian, reaching the tip of the index finger; upon reaching the foot, it enters the sole of the foot, emerges below the medial malleolus, and enters the Foot-Shaoyin Kidney Meridian. The Yin Qiao Mai (Yinchiao Vessel) is a branch of the Foot-Shaoyin Kidney Meridian, connecting at the inner canthus; from the Yin Qiao Mai, it reunites with the eye, intersecting with Jingming (BL1) of the Foot-Taiyang Bladder Meridian. This constitutes one circuit. Circulating in this manner for twenty-five circuits, when the sun sets, Yang Qi is exhausted and Yin Qi receives Qi. Thus, it enters internally into the Yin organs. Its entry into the Yin organs usually begins from the Foot-Shaoyin Kidney Meridian, pouring into the Kidney; the Kidney pours into the Heart; the Heart pours into the Lung; the Lung pours into the Liver; the Liver pours into the Spleen; the Spleen pours back into the Kidney. This constitutes one circuit. Circulating in this manner for twenty-five circuits, in the early morning, Yin Qi is exhausted and Yang Qi receives Qi. Thus, it emerges externally into the Yang meridians. Its emergence into the Yang meridians usually starts from the Kidney, proceeding to the Foot-Shaoyin Kidney Meridian, and again reunites with the eye. When Wei Qi enters the Yin organs, sleep occurs; when it emerges into the Yang meridians, wakefulness occurs. In one day comprising one hundred ke (time units), it circulates fifty times around the body. This is the measure of Wei Qi. The meaning of Ying Qi (Nutritive Qi) and Wei Qi following each other as stated in the Nan Jing (Classic of Difficult Issues) is that Ying Qi circulates within the vessels, while Wei Qi circulates outside the vessels, moving in mutual attachment, not implying that they travel together within the same meridian.
Jueyin Wind-Wood (Foot-Jueyin Liver Meridian, Yi Wood. Hand-Jueyin Pericardium Meridian, Ministerial Fire.)
Shaoyin Sovereign-Fire (Hand-Shaoyin Heart Meridian, Ding Fire. Foot-Shaoyin Kidney Meridian, Gui Water.)
Shaoyang Ministerial-Fire (Hand-Shaoyang Sanjiao Meridian, Ministerial Fire. Foot-Shaoyang Gallbladder Meridian, Jia Wood.)
Taiyin Damp-Earth (Foot-Taiyin Spleen Meridian, Ji Earth. Hand-Taiyin Lung Meridian, Xin Metal.)
Yangming Dry-Metal (Hand-Yangming Large Intestine Meridian, Geng Metal. Foot-Yangming Stomach Meridian, Wu Earth.)
Taiyang Cold-Water (Foot-Taiyang Bladder Meridian, Ren Water. Hand-Taiyang Small Intestine Meridian, Bing Fire.)