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(Mr. Shi annotated the *Ling Shu* and *Su Wen*, two works that are circulated in the world.

The term "regions" refers to the head, face, chest, back, flanks, abdomen, hands, and feet, each having its specific domain and governing position. The head is the chief of the Three Yang meridians, specifically referring to the Taiyang (Greater Yang) meridian. From the Yintang point to the forehead, upward to the vertex, and from the occiput down to the neck, these are all regions traversed by the Foot-Taiyang Bladder Meridian; thus, it is said that the head is the chief of the Three Yang.

The zygomatic bones belong to the Kidney. The *Ci Re Lun* (Treatise on Acupuncture for Heat) states: "When color manifests on the zygomatic bones, the heat internally connects with the Kidney." The eyes are the orifices of the Liver, and the essence of the Five Zang organs pours into them. Therefore, the pupil belongs to the Kidney, the iris (black part) belongs to the Liver, the sclera (white part) belongs to the Lung, the inner and outer canthi fleshy parts belong to the Heart, and the eyelids belong to the Spleen. The nostrils are the orifices of the Lung, positioned centrally, and also belong to the Spleen. The junction where the nasal cavity communicates with the oral cavity is called the *hangsang* (nasopharynx), also known as the *xumen*. This is the region where Liver Qi and Lung Qi intersect. The mouth is the orifice of the Spleen, and the flesh of the upper and lower lips is governed by the Spleen. The tongue is the sprout of the Heart, teeth are the surplus of bone, and the gums are the dental bed, belonging to the Stomach. Inside the sublingual area, there are the Lianquan and Yuying points, which are the source of fluid ascent. The ears are the orifices of the Kidney, and the Heart also opens into the ears. The Foot-Yangming Stomach Meridian originates at the side of the nose, crosses at the root of the nose, follows the lateral aspect of the nose, enters the upper teeth, and circles the lips. The Foot-Shaoyang Gallbladder Meridian originates at the outer canthus, ascends to the temporal angle, follows behind the ear, enters the ear, exits anterior to the ear. These illustrate how the regions of the head and face have their respective affiliations.

Below the head and face, anteriorly are the throat and pharynx, posteriorly is the nape. The larynx (throat) is on the right, and the pharynx is on the left. The larynx is the airway and is hard; the pharynx is the food pipe and is soft. Within the throat and pharynx lies the *kengsangs* (voice box). Above the *kengsangs* is the root of the tongue (*sheben*). The root of the tongue is at the end of the mandible, and the apex of the maxilla is the uvula, also known as the epiglottis. The Foot-Taiyin Spleen Meridian connects to the root of the tongue, the Foot-Shaoyin Kidney Meridian connects to the root of the tongue, and the Foot-Yangming Stomach Meridian connects to the root of the tongue. Outside the throat and pharynx, there are arteries on both sides, known as the Renying pulse, which belongs to the Foot-Yangming Stomach Meridian. Below the Renying, the hollow space above the clavicle is called the Quepen region, governed by the Lung. Furthermore, the Yangming meridians run along the anterior body, from the face to the chest and diaphragm, all governed by the Yangming meridians.

Below the Quepen and above the nipples is the Yingzhong region. The center of Yingzhong is called Shangge, which corresponds to the Upper Jiao. The *Classic* states: "The Upper Jiao develops and disseminates, distributing the flavors of grain and food, steaming the skin, filling the body, and moistening the hair, like mist and dew irrigating." Below Shangge is Gezhi, i.e., the thoracic diaphragm. Between the chest and diaphragm is Danzhong, which is the Pericardium (Ying Belt). The Pericardium governs blood and vessels, extending horizontally and spreading throughout. Below the Pericardium are the collateral vessels of the Stomach, connecting with each other and spreading horizontally among the meridians. The chest is the palace city of the Heart Master, with the Pericardium enveloping the exterior of the Heart. The Lung is the leader of the Five Zang organs, covering the top of the Heart. Below the heart pit is the Middle Jiao. The Stomach relates to the Triple Burner; beside the Upper Jiao is the Shangwan point, beside the Middle Jiao is the Zhongwan point, and beside the Lower Jiao is the Xiawan point.

Below the head and face, posteriorly is the nape. The center of the nape is named Fengfu. The sides of the nape are named Fengchi. The prominent Dazhui below the neck is the first vertebra of the spinal column. Descending from the spine to the sides of the seventh vertebra is the Geshu point. The *Classic* states: "Beside the seventh vertebra, there is the 'Small Heart'." This clarifies that the Geshu point is where Heart Qi travels in and out, while the Foot-Taiyang Bladder Meridian runs along the back. This illustrates how the chest and back regions have their respective affiliations.

Below the chest and diaphragm is the abdomen; the sides of the chest and diaphragm are the flanks. Anteriorly is the chest, posteriorly is the back, and the flanks lie between them, running along the lateral aspect of the body. Above the flanks is the axilla; below the flanks is the hypochondrium (costal margin). The Foot-Taiyang Bladder Meridian runs along the back and governs "opening"; the Foot-Yangming Stomach Meridian runs along the front and governs "closing"; the Foot-Shaoyang Gallbladder Meridian runs along the side and governs the "pivot". Without opening, closing cannot occur; without closing, opening cannot occur; without the pivot, opening and closing cannot function. Thus, the pivot is the key to opening and closing.

The large abdomen is called Kun Earth, which is the Taiyin Spleen Earth. Above the large abdomen, between the Xiawan and Zhongwan, is called Central Earth, which is the Yangming Stomach Earth. The Large Intestine is called Huichang, coiling around the left and right sides of the abdomen. The Small Intestine is located anterior to the Large Intestine. The umbilicus is the convergence of the Small Intestine, and adjacent to the umbilicus on both sides is the origin of the Chong Mai (Penetrating Vessel). The *Classic* states: "The Chong Mai is the pulsating artery on both sides of the umbilicus." Below the umbilicus is the lower abdomen. The sides of the lower abdomen are called Shaofu. The lower abdomen belongs to the Shaoyin Water Zang (Kidney) and Water Fu (Bladder). The Shaoyin channel, along with the Jueyin Liver, is where the Baozhong Blood Sea resides. The Blood Sea is outside the Bladder, named Baozhong. The Bladder is inside the Blood Sea, hence it is said that the Bladder is the chamber of the Baozhong. Entering anteriorly from the lower abdomen leads to the anterior yin, which belongs to the Shaoyin, Taiyin, and Yangming meridians. The *Classic* states: "The Kidney opens into the two yins (anterior and posterior)." Thus, the anterior yin belongs to the Shaoyin. The *Classic* states: "The anterior yin is the gathering place of the Zongjin (tendons), where the Taiyin and Yangming merge." It also says: "The Yangming moistens the Zongjin." Therefore, the anterior yin also belongs to the Taiyin and Yangming. The scrotum and testes belong to the Foot-Jueyin Liver Meridian, so the *Classic* states: "In Jueyin disease, the tongue curls and the scrotum retracts." Tongue curling relates to the Hand-Jueyin Pericardium, and scrotal retraction relates to the Foot-Jueyin Liver. It also says: "When Jueyin Qi perishes, the testes retract upward, leading to death." This illustrates how the flank and abdominal regions have their respective affiliations.

The two hands and two feet are called the Four Limbs. Above the hands are the elbows and axillae; above the feet are the popliteal fossae. The two elbows, two axillae, and two popliteal fossae (and knees/thighs depending on interpretation of 'Ba Xi') are collectively called the Eight Creeks. From the arm to the hand, this is where the Hand-Taiyin Lung Metal meridian originates, involving the Hand-Shaoyin Heart and Hand-Jueyin Pericardium. These are the Three Yin meridians of the hand, traveling from the chest to the hand. From the foot to the thigh, this is where the Foot-Taiyin Spleen meridian originates, involving the Foot-Shaoyin Kidney and Foot-Jueyin Liver. These are the Three Yin meridians of the foot, traveling from the foot to the abdomen.

The Three Yin and Three Yang meridians of the hands and feet, totaling twelve meridians, interconnect and circulate throughout the body. The Hand Three Yin meridians travel from the chest to the hand; the Hand Three Yang meridians travel from the hand to the head. Thus, the Hand Three Yin and Yang circulate along the arms. The Foot Three Yang meridians travel from the head to the feet; the Foot Three Yin meridians travel from the feet to the abdomen. Thus, the Foot Three Yang and Yin circulate along the legs and thighs. This illustrates how the regions of the hands and feet have their respective affiliations.