What do you mean, Yang dominates the ascent and Yin dominates the descent?

Ascension and descent are opposites. From the perspective of yin and yang, ascending belongs to yang and descending belongs to yin. Its so-called yang dominating ascending yin dominating descending is a generalization of some zang-fu organ or other relative material attributes. For example, the physiological function of the spleen is to promote clearing, while the physiological function of the stomach is mainly to receive clearing. Functionally speaking, the spleen governs yang rising and the stomach governs yin falling. That is, the Yang dominates the ascending and the Yin dominates the descending. Note: in the ascension of Yang to heaven, the meaning of the Lord is equivalent to "doing".