Jing-river (metal) point. Qianjin Yifang lists it as the source point of liver meridian. Lingshu-Weiqi: "The root of foot jueyin is 5 cun above Xingjian (LR2)."

bubble_chart Etymology

"Zhong" (中), center; "feng" (封), to gather or seal. The point is located in the depression between two tendons in front of medial malleolus.

bubble_chart Location

Zhongfeng (LR4) acupoint
(qouted from "Meridians and Acupoints")

• Lingshu-Benshu: "In the depression 1.5 cun anterior to medial malleolus. When the foot is inverted, the depression becomes deeper; when foot is relaxed, the depression opens. It is found by shaking foot";
• Zhenjiu Jiayi Jing: "1 cun anterior to medial malleolus, in the depression when foot is extended and sole is raised";
• Waitai Miyao: "In the curved depression on dorsum of foot";
• Zhenfang Liuji: "In the depression between tendons";
• Xunjing Kaoxue Bian: "Level with the tip of medial malleolus, 1.5 cun anterior (or 1 cun anterior to malleolus), between two tendons when foot is extended. Insert the needle with foot flexed";
• Zhenjiu Jicheng: "Inner ankle. "Slightly below 1 cun anterior to medial malleolus." Specifically, in the depression between tibialis anterior tendon and extensor hallucis longus tendon when foot is dorsiflexed.

bubble_chart Anatomy

• Muscles: tibialis anterior tendon, extensor hallucis longus tendon.
• Nerve: branches of medial dorsal cutaneous nerve of foot, saphenous nerve.
• Vessel: dorsal pedis venous network.

bubble_chart Manipulation

Insert toward heel, 0.3 to 0.5 cun. Moxibustion with moxa cone 3 to 5 times, moxibustion with moxa stick for 5 to 10 minutes.

Soothe liver and regulate qi, clear and purge lower jiao.

• Classical: liver disease, hypochondriac pain, jaundice with mild fever, no appetite, periumbilical pain, hernia pain, tympanites, deficiency fatigue, seminal emission, enuresis, difficulty in urination, sudden genital pain, retracted genitals with referred pain, lumbago, cold feet, swelling and pain in medial malleolus, difficulty walking, dry throat, swollen throat.
• Modern: hepatitis, jaundice, foot pain.

bubble_chart Combinations

• Periumbilical pain: Shuifen (CV9), Shenque (CV8), Zhongfeng (LR4).
• Tympanites: Siman (KI14), Zhongfeng (LR4).
• Acute viral hepatitis: Yiming (EX-HN14), Ganshu (BL18), Zhongfeng (LR4).
• Tough walking: Zusanli (ST36), Zhongfeng (LR4).