How is stomach pain and spleen deficiency caused

In TCM, the spleen is the main function of transporting and transforming water and dampness, transporting and transforming the essence of water and grain, and regulating blood and clearing. When the spleen shows weakness, it will show low function of transporting and transforming the essence of water and grain. In TCM, the stomach is the main receiver of decomposition, food is initially digested and decomposed by the stomach and then transferred out of the spleen. The spleen is transporting and transforming the essence of water and grain. Therefore, the water and grain in the stomach cannot be effectively transported, resulting in food accumulation, phlegm turbidity, etc.