Vertically 0.7–1 cun. Or 1.5-2 cun through the foramen.
Caution:Reducing Needling techniques are contraindicated during pregnancy, except for promoting labor.
'Liao' means crevice, thus BL-31, BL-32, BL-33 and BL-34 are called 'Siliao'(Four crevices) or 'Baliao'(Eight crevice since there are four crevices on each side). They are called so, due to their location in the four sacral foramina.
Shangliao BL-31 (Upper crevice) is at the highest sacral foramina. Ciliao BL-32 (Second crevice) is at the second. Zhongliao BL-33 (Middle crevice) the third, while Xialiao BL-34 (Lower crevice) is the last one.
All these four points share similar actions.
First of all, BL-34 regulates the Lower Burner and treats urination and defecation difficulties. Kidney Deficiency is an important underlying pattern for this disorder, which is frequently seen in elderly and weak patients. Typical urinary manifestations include painful and difficult urination, dark and retention of urine and enuresis. While intestines related symptoms covers difficult defecation, constipation, borborygmi and diarrhoea. BL-34 has the widest action on the intestines.
Furthermore, by removing Dampness from the Lower Burner, the point is effective in treating gynecological disorders such as dysmenorrhea, infertility, irregular menstruation, labor pain and leucorrhoea. Xialiao BL-34 has the strongest effect.
BL-34 also has the strongest effect on solving genital disorders. Typical manifestations are swelling and painful vagina, incessant green vaginal discharge, pain of the testicles and etc.