Dorsal Yu points are the qi of the internal organs infused in the back and waist of the acupoints, there are a total of 12 points in the back and waist, are located in the foot solar bladder meridian on the first side of the line. The back of the acupoints include lung Yu, syncope Yu, heart Yu, liver Yu, gall bladder Yu, spleen Yu, stomach Yu, Sanjiao Yu, kidney Yu, large intestine Yu, small intestine Yu, bladder Yu. Lung Yu is located in the spinal region, 1.5 inches away from the posterior midline, under the spinous process of the 3rd thoracic vertebra. Syncope Yu is in the spinal region, 1.5 inches away from the posterior midline, under the spinous process of the 4th thoracic vertebra. Heart Yu is in the spinal region, 1.5 inches away from the posterior midline, under the spinous process of the 5th thoracic vertebra. Liver Yu is in the spinal region, 1.5 inches away from the posterior midline, under the spinous process of the 9th thoracic vertebra. Gallbladder Yu is located in the spinal region, 1.5 inches away from the posterior midline, under the spinous process of the 10th thoracic vertebra. Spleen Yu is in the spinal region, 1.5 inches away from the posterior midline, under the spinous process of the 11th thoracic vertebra. Stomach Yu is located in the spinal region, 1.5 inches away from the posterior midline, under the spinous process of the 12th thoracic vertebra. San Jiao Yu is in the spinal column area, 1.5 inches away from the posterior midline, under the spinous process of the 1st lumbar vertebra. Kidney Yu is in the spinal region, 1.5 inches away from the posterior midline, under the spinous process of the 2nd lumbar vertebra. Yu of the large intestine is in the spinal region, 1.5 inches away from the posterior midline, under the spinous process of the 4th lumbar vertebra. Yu of the Small Intestine is in the sacral region, opening 1.5 inches beside the sacral median ridge, transverse to the 1st post-sacral foramen. Bladder Yu is in the sacral area, 1.5 inches beside the sacral median ridge, horizontal to the 2nd post-sacral foramen. Please do not perform needling or other operations on the acupuncture points on your own. You should go to a regular hospital for treatment to avoid risks.