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The Stomach is the Fu-organ of the Spleen, also known as the "Sea of Water and Grain," and stands in exterior-interior relationship with the Spleen. The Stomach is the root of human life; when Stomach Qi (Vital Energy) is robust, all Zang-fu organs are robust. The Foot-Yangming Meridian belongs to it. If Stomach Qi is exhausted, death occurs after five days. In excess conditions, there is abdominal distension, difficult defecation, pain in limbs and joints, inability to eat, and incessant vomiting and regurgitation. In deficiency conditions, there is borborygmus, abdominal fullness, and loose stools. In cold conditions, there is abdominal pain and inability to consume cold foods. In heat conditions, the face is red like a drunkard, limbs are weak and unable to support the body, sleep is restless, speech is delirious and chaotic, and stool is hard. When the disease is severe, there is distension of the abdomen and hypochondrium, vomiting and regurgitation with inability to eat, pain in the epigastrium, obstruction of upper and lower passages, aversion to odors, dislike of people's speech, chills, and frequent yawning and stretching. Heat in the Stomach causes black lips; severe heat causes climbing high to sing, discarding clothes and running, erratic mania, sweating on the forehead, and incessant epistaxis. Extreme deficiency causes swelling and fullness of the four limbs, shortness of breath in the chest, undigested food, and central fullness. Wind invading the Stomach causes incessant loose stools; insufficient Stomach Qi causes frequent hunger but indigestion. If the area below the patient's nose is flat, it indicates disease in the Stomach; if accompanied by thirst, it is treatable. A Stomach pulse that is firm and long, with a yellowish-red complexion, indicates disease of the hip (fracture or pain). A pulse that is weak and scattered indicates Bi-syndrome due to food stagnation. At the Right Guan position, a floating and large pulse indicates deficiency; floating and short/rough indicates excess; floating and slightly slippery also indicates excess; floating and slow indicates cold; floating and rapid indicates heat. These are the methods for determining the excess-deficiency, cold-heat, life-death, and favorable-unfavorable patterns of the Stomach Fu-organ based on pulse and symptoms.

"Zhu Zhi Bei Yao" states: When this meridian is affected, there is shivering chills, frequent groaning and yawning, dark facial color. Upon onset, there is aversion to people and fire, and startle upon hearing wooden sounds. The heart feels agitated, and the patient closes doors and windows to stay alone. Severe cases involve climbing high to sing, discarding clothes and running, rumbling and distension of the abdomen, which is termed Jue syndrome. "Mai Jue" states: The Right Guan position is where the Spleen and Stomach pulses emerge. Light pressure yields the Stomach pulse, which belongs to the Exterior; heavy pressure yields the Spleen pulse, which belongs to the Interior. The Spleen governs muscles, and its pulse runs along the muscles. For palpation technique, using the weight of nine beans, pressing to the muscle level, a pulse that flows gently like willow tips in a breeze is a Slow (Huan) pulse; adding slight force, a solid and substantial pulse is a Large (Da) pulse. This Slow-Large combination represents the normal pulse state of a healthy Spleen. The Spleen pulse originates in the muscles; if it appears above the muscles, between the skin and hair, it is a Floating (Fu) pulse; if it sinks below the muscles, appearing at the level of sinews and bones, it is a Deep (Chen) pulse.