The relationship between Fei (肺)and Pi (脾)

Fei  and Pi  assist each other in Qi generation and water metabolism.

Fei  inhales fresh air and distributes water to all parts of the body, while Pi  absorbs nutrients by transforming and transporting food and water. Pi supplies Fei with essential substances. “Pi  is the origin of acquired Essence, and Fei  is the axis of Qi.” Fei  distributes and regulates the water passage, assisting Pi  in its function of transporting body fluid. Deficient Pi  cannot transform phlegm and allows it to accumulate, or may stagnate fluid, leading to cough with excess sputum and dyspnea.

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