Lumbar sacral pain, lower back and leg pain, lower limb paralysis, metrorrhagia, dysmenorrhea, irregular menstruation, enuresis, fetal malposition.

In the waist area, on the posterior midline, below the spinous process of the 5th lumbar vertebra.

Sit upright or lie face down. Take a line across the highest points of both iliac crests around the waist and abdomen for one week, and push down one vertebral spine from the intersection of this line with the spine (i.e., the spinous process of the 5th lumbar vertebra), and the depression at its lower edge is where the acupoint is located.