Looking back at the Eight Vajrayana Kung Fu is to let your eyes look back, let you concentrate on one place, get rid of distractions and achieve peace of mind. Moreover, when the eyes look back, the original intention is to look back at the acupuncture points of the body and foot kidney after scanning, so that the kidney water rises to the dry tripod, the heart and kidney intersect, nourish the body and mind, adjust the balance of yin and yang of the body and mind, and gradually eliminate the heart disease.