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(The health preservation mantra states): Upon inhalation, lift the Qi; let the Qi return to the navel. Upon lifting, swallow the saliva; let Fire and Water meet. This practice is not restricted by walking, standing, sitting, or lying down. Use the tongue to stir the "Huachi" (Sacred Pool, referring to the mouth), pressing it against the upper palate. Wait for saliva to generate, rinse the mouth, and then swallow it. (Note: The fluids of the whole body are salty, but only the saliva in the Huachi under the tongue is sweet and light. Another saying holds that making a sound when swallowing harmonizes the meridians of the entire body.) Then, inhale a mouthful of clear Qi through the nose, using intention and visual focus to transport it along with the saliva to the Dantian below the navel. Hold the intention briefly; this constitutes one "inhalation." Subsequently, gently contract the lower region as if holding back stool. Using intention and visual focus, lift from the Weilu point (Bailian, GV-29), up through the Jiaji bilateral Guan points, penetrating the Yuzhen point (Yuzhen, GV-16), and entering the Ninwan Brain Palace. This constitutes one "exhalation." Cycle continuously. Long-term practice leads to strong spirit and vitality, preventing all diseases.

(Another mantra states): Rub and scoop, switching hands left and right. Completing the work of nine times nine (81 repetitions) ensures True Yang does not leak. During Xu and Hai hours (7 PM to 11 PM), when Yin is abundant and Yang is declining, use one hand to scoop the external kidneys (testicles) and the other to rub below the navel. Switch hands, performing eighty-one repetitions each. After half a month, essence becomes secure; the longer practiced, the better the effect.

(Another saying): At midnight, gather the mind and sit quietly for a while. This is the key principle for preserving the Yuan Qi (Original Qi) throughout the body.

Accumulating Shen generates Qi; accumulating Qi generates Jing. This is the process from non-being to being. Refining Jing into Qi, refining Qi into Shen, and refining Shen back into Void. This is the process from being to non-being.

Hair should be combed frequently; the face should be rubbed/massaged frequently; the eyes should move/rotate frequently; the ears should be tapped frequently (closing the ears and tapping the head is called "Resounding Heavenly Drum"); the tongue should press against the palate; the teeth should be叩击 (tapped/clenched) frequently; saliva should be swallowed frequently; turbid Qi should be exhaled via "He" sounds frequently; the back should be kept warm frequently; the brain should be protected frequently; the abdomen should be massaged frequently; the anal sphincter should be lifted/pulled frequently; the limb joints should be shaken frequently; the soles of the feet should be... [text cuts off here]

Prolonged viewing damages Blood; prolonged lying down damages Qi; prolonged sitting damages flesh/muscles; prolonged standing damages bones; prolonged walking damages sinews/tendons. Sudden excessive joy damages Yang; sudden anger damages the Liver; excessive rumination/thinking damages the Spleen; extreme sorrow/worry damages the Heart; excessive grief damages the Lungs; excessive fear damages the Kidneys; prone to fright damages the Gallbladder. Overeating damages the Stomach; sexual intercourse after drunkenness/fullness damages Essence; exhausting labor damages the Middle Jiao/Zhong Qi. Injury to Wind in Spring leads to undigested diarrhea (Sun Xie) in Summer; injury to Heat in Summer leads to Malaria in Autumn; injury to Dampness in Autumn leads to coughing in Winter; injury to Cold in Winter leads to Warm Diseases (Wen Bing) in Spring. Speaking during sleep greatly depletes Yuan Qi; therefore, the Sages prohibit it.