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(The dorsum of the foot) [The middle part] belongs to the Foot-Yangming Stomach Meridian (Ling Shu states: The meridian of Foot-Yangming runs along the lateral aspect of the lower leg, descends to the dorsum of the foot, and enters the medial space between the second toe. It also states: On the dorsum of the foot, where the pulse is hard and depressed, it indicates a disease of the Foot-Yangming meridian, which is the stomach pulse. Su Wen states: Heaviness of the body and difficulty in walking are due to the stomach pulse being located in the foot. Zhang Sanxi says: Chongyang acupoint (Chongyang, ST42), located in the depression five cun above the dorsum of the foot, can be used for rescue in cases of sudden syncope with a hidden pulse, which is what is meant by "having stomach qi".). It also belongs to the Foot-Taiyin Spleen Meridian (Su Wen states: The human pulse at the lower part corresponds to the Foot-Taiyin, used to observe the qi of the spleen and stomach. Note: The stomach pulse is located at Chongyang on the dorsum of the foot; its movement responds to the hand, used to observe the stomach, and simultaneously observes the spleen. It also states: Inability to eat, stiffness of the tongue root; vomiting after eating, cold diarrhea, abdominal distension; loose stools or dysentery, urinary obstruction; the root of the disease lies in the spleen. If the Chongyang pulse is absent, it is a death case that cannot be treated.). [The medial margin] belongs to the Foot-Jueyin Liver Meridian (Ling Shu states: The meridian of Foot-Jueyin originates from the hair tuft at the big toe, and ascends along the medial margin of the dorsum of the foot. It also states: Shaoyang within Yin is the liver; its Yuan-Source point originates from Taichong. Taichong, located two cun above the big toe in the depression, is the Shu-Stream point. Su Wen states: Hernia in men, lower abdominal pain in women, squinting eyes, sores, acne, and carbuncles; the root of the disease lies in the liver. If the Taichong pulse is absent, it is a death case that cannot be treated. Shen Chengzhi says: There is the Taichong acupoint on the dorsum of the foot, also known as Chongyang or Fuyang, approximately two cun posterior to the metatarsophalangeal joint of the big toe and second toe on the dorsum of both feet, found by palpating the arterial depression in the hollow. If there is a pulse in the acupoint, life is possible; if no pulse, death ensues. This is because this acupoint is where the Qi of the Foot-Jueyin meridian pours in, serving as the Shu point of the liver; and it is where the Qi of the Foot-Yangming meridian passes through, serving as the Yuan-Source point of the stomach. The liver is the source of growth and development, and the stomach is the foundation of the five zang organs. Because they can penetrate the entire skeleton and nourish all meridians, they are called "Chong" (Pulsation/Thrust). These two meridians are mutually dependent; there is no case where the liver dies while the stomach survives alone, nor where the stomach perishes while the liver remains. Therefore, although they are different meridians sharing the same acupoint, there is no need to distinguish whether it belongs to the liver or the stomach. However, one must diagnose the Taixi acupoint to make a reference decision. Gu Yingbai says: Taichong is the Shu-Stream point of the Foot-Jueyin meridian, and Chongyang is the Yuan-Source point of the Foot-Yangming meridian. Although these two acupoints are close, they are actually distinct. As for the Fuyang acupoint of the Gallbladder meridian, it is located above the lateral malleolus, connecting them to form one, which is something I cannot understand. Chongyang originally belongs to the Stomach but is also used to observe the absence of the Spleen pulse; since the spleen and stomach are exterior-interior related, why should later generations act subjectively and arrogantly?). [The lateral margin] belongs to the Foot-Shaoyang Gallbladder Meridian (Ling Shu states: The meridian of Foot-Shaoyang runs along the dorsum of the foot and enters the space between the little toe and the second toe; its branch diverges from the dorsum of the foot and enters the space between the big toe. It also states: The Luo-Connecting vessel of Foot-Shaoyang is named Guangming, five cun above the ankle, diverging to the Jueyin meridian and descending to connect with the dorsum of the foot. Excess conditions manifest as厥逆 (Jue-ni, reversal cold/heat), deficiency conditions manifest as Wei syndrome (flaccidity), inability to sit or rise, and treatment involves selecting the Luo-Connecting point.). It also belongs to the Chong Mai (Penetrating Vessel) (Ling Shu states: The Luo-Connecting vessel of the Chong Mai slants into the ankle, emerges to belong to the dorsum of the foot, enters the space between the big toes, pours into the various collateral vessels to warm the shins of the feet, and this is the normal movement of the vessel qi).