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Alternate names: 肠哀 cháng āi, Intestinal Lament; 肠屈 cháng qū, Intestinal Bend

Channel: SP, Foot Greater Yīn (tài yīn) Spleen Channel

Modern location: An acupoint located on the upper abdomen, 3 cùn superior to SP-15 and 4 cùn lateral to the midline.

Classic location: One cùn and five fēn below Sun and Moon (GB-24), four and a half cùn from the midline. (Zhēn Jiǔ Dà Chéng)

Local anatomy: The 8th intercostal artery and vein. The 8th intercostal nerve.

Action: Clears heat and disinhibits dampness; frees bowel qì.

Modern indications: Abdominal pain; indigestion; constipation; dysentery.

Classic indications: Abdominal cold pain; pain in the umbilical region; dysentery with the pus and blood.

Needle stimulus: Needling: 0.5‒1.0 cùn perpendicular insertion. Moxa: 5 cones; pole 10‒20 min.

Point groups: Intersection point (jiāo huì xué) of the spleen channel and yīn linking vessel (yīn wéi mài).

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