Irregular menstruation, leukorrhea, endometritis; lower back pain, fibromyositis, lumbar muscle strain.

Beneath the spinous process of the 4th lumbar vertebra, in the depression about 3.5 cun lateral. (This acupoint is a pair, one on each side)

Sit or lie down straight. Take a line across both anterior superior iliac spines around the waist and abdomen for one week, and measure a transverse palm width from the intersection of this line with the spine, press where there is a depression, and this is where the acupoint is located.