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Channel: BL, foot greater yáng (tài yáng) bladder channel

Modern location: An acupoint located on the lower back, level with the inferior border of the spinous process of the first lumbar vertebra, 1.5 cùn lateral to the midline.

Classical location: One cùn and five fēn either side of the spine, below the thirteenth vertebra. The point is found in straight sitting posture. From The Great Compendium of Acupuncture and Moxibustion (针灸大成 zhēn jiǔ dà chéng)

Local anatomy: The posterior rami of the 1st lumbar artery and vein. The lateral cutaneous branch of the posterior ramus of the 10th thoracic nerve; deeper, the lateral branch of the posterior ramus of the 1st lumbar nerve.

Action: Regulates qì and disinhibits water.

Modern indications: Abdominal distension; rumbling intestines; retching and vomiting; diarrhea and dysentery; water swelling; painful stiffness of the back and lumbus.

Classical indications: Dizzy vision; headache; generalized heat effusion; jaundice; inability to get food and drink down; alternating heat effusion and aversion to cold; large accumulations and gatherings in the smaller abdomen.

Needle stimulus: Needling: 0.5 cùn downward oblique insertion. Moxa: 3‒7 cones; pole 20‒30 min.

Needle sensation: Distension and numbness, often spreading downward and outward.

Point groups: Transport point (shù xué) of the triple burner.

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