In the depression between the processus spinosus of the Cd1 and Cd2 vertebrae.Single point (Fig.107，24#).Perpendicular insertion.Filiform needle 0.5-1cm.Or moxibustion with mugwort.Indications：Paralysis of the pelvic limb，paralysis of the tail，prolapse of anus，constipation or diarrhea.