Small intestine governs separation of the clear and the turbid

The small intestine’s function of further transforming food already decomposed by the stomach. The clear refers to what is useful to the body, while the turbid denotes waste. In the small intestine, the essence of grain and water is assimilated into the body by the action of the spleen. Waste water is absorbed and, by kidney qì transformation, is conveyed to the bladder. Hence, The small intestine governs humor.