[Location] Localized in supine position, on the lower abdomen, 1.3 cun below SP15 (Dahengl5), 4 cun lateral to the anterior midline of the body. (Fig.33)
 
[Regional Anatomy] Skin→subcutaneous tissue→obitquus externus abdominis→obilquus internus abdominis. Superficial layer, the lateral crural cutaneous branch of the prior branches of the tenth, eleventh and twelfth thoracic nerves, the subordiantial ramus of thoracoepigastric vein; deep layer, the muscular branches of the prior branches of the tenth, eleventh and twelfth thoracic nerves, and arteries and veins along with them.