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The meridian of Foot-Jueyin (Liver) originates at the pubic hair on the big toe (Pubic hair. The location of Dadun [LR1]. *Suwen* states: The root of Jueyin starts at Dadun).

It ascends along the upper medial border of the dorsum of the foot (Taichong [LR3] is located here), one cun anterior to the medial malleolus (the position of Zhongfeng [LR4]). It ascends eight cun above the ankle, crossing posterior to the meridian of Foot-Taiyin (Spleen) (Foot-Jueyin runs anterior to Foot-Taiyin; upon reaching eight cun above the ankle, it re-emerges posterior to Foot-Taiyin). It continues up the medial aspect of the thigh (the location of Ququan [LR8]), enters the pubic region, circles the external genitalia, reaches the lower abdomen, flanks the stomach, and connects with and belongs to the Liver (As Foot-Jueyin is the meridian of the Liver, its vessel belongs to the Liver). It links with the Gallbladder (The Gallbladder is the supporting organ of the Liver, so the Liver meridian connects with the Gallbladder). It passes upward through the diaphragm, spreads over the hypochondrium, follows the posterior aspect of the throat, and enters the nasal cavity (The *Ling Shu* states: The nasal cavity is the outlet for the dispersion of Qi). It connects with the optic nerve system, emerges from the forehead, and meets the Du Meridian at the vertex. A branch descends from the optic nerve system into the cheek interior, circling the inside of the lips. Another branch diverges from the Liver, pierces through the diaphragm, and flows upward into the Lungs (Foot-Jueyin thus transfers to Hand-Taiyin [Lung]).

When the meridian undergoes pathological changes ("Shi Dong" diseases) (Foot-Jueyin typically has abundant blood and scarce Qi; when Qi becomes diseased first, it is called "Shi Dong"). Symptoms include low back pain with inability to bend or extend (As described in *Suwen*: Low back and spine pain with inability to bend or extend is due to the third month where Yang energy振s, flourishing all things, bending but not extending). In men, hernia; in women, swelling of the lower abdomen (As described in *Suwen*: Hernia and lower abdominal swelling in women are associated with Jueyin corresponding to the Chen month, the third lunar month, where Yin evil within Yang is in the middle, hence termed hernia and lower abdominal swelling). Severe cases present with dryness of the pharynx (As described in *Suwen*: Severe dryness of the pharynx due to heat arises from the struggle between Yin and Yang generating heat). The face appears dusty and loses luster (The face looks as if covered with dust, and color is lost).

These are diseases generated by the Liver itself ("Suo Sheng Bing") (Blood becomes diseased due to Qi; this is a disease generated by Qi, hence called "Suo Sheng Bing"). Manifestations include chest fullness, vomiting and regurgitation, and watery diarrhea (When pathogenic factors invade the meridian and affect the Liver internally, Liver Qi overacts on the Spleen, leading to watery diarrhea). Fox hernia (Foxes cannot urinate at night but can after sunrise; human symptoms mimic foxes, hence named Fox Hernia). Enuresis and strangury (Enuresis refers to involuntary urination; strangury refers to difficulty or inability to urinate). In excess conditions, the pulse at Cun Kou is one times larger than Ren Ying; in deficiency conditions, the pulse at Cun Kou is smaller than Ren Ying.

The collateral vessel of Foot-Jueyin is named Ligou (LR5), located five cun above the medial malleolus, diverging to connect with Foot-Shaoyang (Gallbladder). Its branch ascends along the tibia to the testis, knotting at the penis. If Qi rebels in this collateral, testicular swelling and sudden hernia occur. In excess conditions, priapism and heat manifest; in deficiency conditions, sudden itching occurs. Treatment involves selecting the point of divergence.

The sinews of Foot-Jueyin originate above the big toe, ascend and knot anterior to the medial malleolus, follow the tibia upward, and knot below the medial condyle of the femur. They ascend along the medial thigh and knot at the external genitalia, linking various sinews. Pathologies include pain at the big toe and anterior medial malleolus, pain at the medial condyle, pain in the medial thigh, muscle cramps, dysfunction of the external genitalia. Injury from sexual excess leads to flaccidity; injury from Cold leads to retraction; injury from Heat leads to flaccid priapism. Treatment should focus on promoting water metabolism and clearing Yin. For muscle cramps, treatment involves burning needle puncture (Cao Zhen), using the number of sessions until improvement, and using painful points as acupuncture points. This condition is named Jiu Bi (Late Autumn Bi Syndrome).

Evil invading the collateral vessels of Foot-Jueyin causes sudden hernia and acute pain. Puncture the area above the nail plate and at the junction of flesh and nail on the big toe, one needle per side. Men recover immediately; women recover shortly after. Treat left lesions on the right, and right lesions on the left.

Liver diseases manifest as pain in both hypochondria radiating to the lower abdomen, causing irritability. Deficiency presents with blurred vision, inability to see, deafness, excessive fear, and a sensation of being pursued. Treatment involves selecting points from Foot-Jueyin and Foot-Shaoyang meridians. Qi rebellion causes headache, deafness, and facial swelling. Bloodletting is indicated for: Liver heat presenting with yellow urine, abdominal pain, somnolence, and body heat. When heat struggles with healthy Qi, delirium and惊厥 (convulsions) occur, accompanied by hypochondriac fullness and pain, restlessness of hands and feet, and inability to lie down. Conditions worsen on Geng Zi days; profuse sweating on Jia Yi days; death may occur on Geng Xin days if Qi rebels. Treatment involves needling Foot-Jueyin.

The Foot-Jueyin Liver Meridian travels from the foot to the chest, measuring six chi five cun in length. Both sides combined measure one zhang three chi. There are twenty-six acupoints in total:
Dadun (LR1) x2, Xingjian (LR2) x2, Taichong (LR3) x2, Zhongfeng (LR4) x2, Ligou (LR5) x2, Zhongdu (LR6) x2, Xiguan (LR7) x2, Ququan (LR8) x2, Yinbao (LR9) x2, Wuli (LR10) x2, Yinlian (LR11) x2, Zhangmen (LR13) x2, Qimen (LR14) x2.