Chest and rib pain, back pain, vomiting, indigestion, diarrhea, etc.

On the back, below the spinous process of the 9th thoracic vertebra, 3 cun lateral to the midline. (This acupoint is bilateral, one on each side.)

Sit up straight or lie prone. Push down from the spinous process of the 7th thoracic vertebra for two vertebral spinous processes (i.e., the spinous process of the 9th thoracic vertebra), then measure 4 horizontal fingers laterally from its lower edge, and press where there is a sensation of soreness and swelling, which is the location of this acupoint.