Topic on discussion of Taiyin and Yangming in the plain questions (Twenty-ninth article part I)

The Emperor asked: “The Taiyin spleen meridian acts exterior and interior relating with Yangming stomach meridian. Why do they have different illness?”

Qi Bo answered: “The two meridians have different locations. They alternate vacuity and repletion, and favorableness and unfavorableness in the four seasons (Yangming is repletion and Taiyin is vacuity during spring and summer; Taiyin is repletion and Yangming is vacuity during fall and winter. Taiyin is unfavorableness and Yangming is favorableness in spring and summer; Yangming is unfavorableness and Taiyin is favorableness during fall and winter). The incidence of the disease may from endogenous, or from the outside reasons. Different attributes determine different diseases.”

Key Words: topic on discussion of Taiyin and Yangming, the plain questions