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The Lung Meridian of Hand-Taiyin originates in the middle jiao (Middle Burner), descends to connect with the Large Intestine, then returns to follow the upper opening of the stomach, passes through the diaphragm, and attaches to the Lung. ("Qi" means origin; "Luo" means to connect and surround; "Huan" means to return; "Xun" means to follow along; "Shu" means to attach or belong. The Middle Jiao is located at the Zhongwan point in the center of the stomach. The gastric opening has an upper and a lower part: the upper opening is five cun above the diaphragm, corresponding to the boundary of the Shangwan point; the lower opening is two cun above the umbilicus, corresponding to the boundary of the Xiawan point. "Ge" refers to the diaphragm/membrane. Generally, there is a membrane below the heart that blocks turbid qi from ascending to fumigate the Heart and Lungs.) From the lung system (trachea/throat), it emerges horizontally into the axilla, running along the medial aspect of the arm, anterior to the Heart Meridian of Hand-Shaoyin and the Pericardium Meridian of Hand-Jueyin. ("Xu" means to continue; the lung system refers to the throat, which receives qi and connects inferiorly to the lungs; the junction between the lower arm and the hypochondrium is called the axilla; the area opposite the axilla on the arm contains the elbow; the elbow is the joint of the arm.) It continues along the medial aspect of the forearm, descending along the lower border of the radius/ulna, enters the Cun Kou (pulse-taking site), passes through the Yu Ji (Fish Border) area, and emerges at the tip of the thumb. ("Lian" means edge or corner; beside the high bone behind the palm lies the Guan pulse point; anterior to the Guan is the Cun Kou pulse point. The terms "Yu" and "Yu Ji" refer to the fleshy prominence anterior to the metacarpal bones and posterior to the first metacarpophalangeal joint, collectively called "Yu," while "Yu Ji" specifically names the acupoint within this region. "Duan" means the extremity.) Its branch arises directly from behind the wrist, travels along the medial aspect of the index finger, and emerges at its tip. (The end of the arm bone is the wrist; the main channel of the vessel is the Jing (Channel); intersecting vessels are the Luo (Collaterals). ○ I note: The classic states that the twelve Jing meridians run deep within the muscle intervals, hidden from view; those that are superficial and visible are all Luo collaterals. It also states that all Luo collaterals cannot pass through major joints but must take alternative routes to enter and exit, rejoining at the skin surface. Furthermore, those counted as Jing are channels, while those not counted are collaterals. Now, Hua Bo Ren elaborates that the branch of the Hand-Taiyin meridian emerges from behind the wrist to the tip of the index finger, connecting to the Hand-Yangming meridian, thus being called the Hand-Taiyin Luo collateral; similarly, the branch of the Hand-Yangming meridian emerges from the Que Pen point, flanking the mouth and nose to connect with the Foot-Yangming meridian, thus being called the Hand-Yangming Luo collateral. If all branches of the twelve meridians running deep in the muscle intervals are interpreted as Luo collaterals, then these collaterals would also run deep without being superficially visible, could pass through major joints without taking alternative routes, and should be included in the total measurement of sixteen zhang and two chi of the Jing meridians, rather than being uncounable. Master Bo Ren excels in annotation; how dare I critique? I record this here for the wise to judge.)

The Large Intestine Meridian of Hand-Yangming originates at the tip of the index finger, follows the radial aspect of the finger, emerges at the He Gu point between the two bones, and ascends into the space between the two tendons. (The finger next to the thumb is the index finger; this is the Large Intestine Meridian of Hand-Yangming. Regarding the course of meridians, Yin meridians run on the medial/intrinsic side of the limbs, while Yang meridians run on the lateral/exterior side.) It follows the radial aspect of the forearm, enters the lateral aspect of the elbow, runs along the anterior-lateral aspect of the arm to the shoulder, and emerges anterior to the acromion/clavicle joint. (The space between the two bones at the shoulder tip is the acromion/clavicular joint.) It ascends to meet the intersection of the vertebral column at the Da Zhui point. (The meeting place at the superior margin of the scapula is the Tian Zhu bone, i.e., the prominent vertebrae on the spine.) It descends into the Que Pen (Clavicular Fossa) point, connects with the Lung, passes through the diaphragm, and attaches to the Large Intestine. (Que Pen is an acupoint name located in the depression of the clavicle below the shoulder.) Its branch diverges from the Que Pen, ascends to the neck, penetrates the cheek, and enters the lower gum/tooth socket. (The neck is the cervical region; the curved area below the ear is the cheek; the smaller teeth at the front of the mouth are the incisors/canines.) It returns to emerge, flanking the mouth, crosses at the Ren Zhong (Philtrum) point, crossing from left to right and right to left, and ascends to flank both sides of the nostrils.