1.Gynecological and obstetrical system diseases: Insufficient milk secretion, mastitis, breast inflammation;
2.Respiratory system diseases: Cough, asthma, chronic bronchitis, chest pain, pleurisy;
3.Nervous system diseases: Intercostal neuralgia, brachial plexus neuralgia.

On the chest, directly below the nipple, at the root of the breast, in the fifth intercostal space, 4 cun from the anterior midline. (This acupoint is bilateral, one on each side.)

Step 1: Sit upright or lie on your back.
Step 2: Starting from the nipple, follow the midline of the breast (the vertical line through the nipple) and push down one intercostal space (i.e., the fifth intercostal space), where pressing induces a sensation of soreness and swelling, which is the location of the acupoint.