〔原文〕雁行气法，低头倚壁，不息十二通。以意排留饮宿食从下部出自愈。
〔解说〕雁行气法，将背靠于墙壁，低头，不息十二通。以意念引气入胃中，以内气排除停留
的痰饮和宿食，使从肛门排出体外，则自可痊愈。
小结∶
《诸病源候论》“卷二十·痰饮病诸候”说∶“ 行气者，身直颈曲，排气下行而
一通，愈宿食。” 就是鸭子，因是仿效鸭子，直身低头曲颈，不息行气，故名 行气法。
其方法是背靠墙壁，身站直，低头、曲颈，进行不息呼吸，以意行气，排除胃肠痰饮、宿
食。但本书及《云笈七签》此节前均名为雁行气法。近代有“大雁功”，亦从仿生角度命名
，故仍用雁行气法。
〔原文〕龙行气法，低（叩）头下视，不息十二通。愈风疥恶疮，热不能入。
咽可候病者，以向阳明以达，卧。
以手摩腹至足，以手持引足，低臂十二通，不息十二通。愈脚足虚痹不任行，腰脊痛。
以手着项相叉。治毒。不愈，腹中大气即吐之。
月初出、月中、日入时，向月正立，不息八通，仰头吸月光精入咽之。令阴气长，妇人
吸之，阴精益盛，子道通。
〔解说〕龙行气法，叩头向下视，不息十二通。可治疗风疥恶疮，使热邪不能入人体。
“咽可候病者”应为“咽喉病”，“以向阳明以达，卧。”此句似有短文。存疑待考。
用手按摩腹部到足部，到足后以手握足拉引，然后将臂低垂，如此行十二遍，不息行气十
二通。可治脚病，虚软痹痛不能行走，腰脊疼痛。
用两手交叉握固颈项，可治毒邪。不愈时，由腹中行气，使气大量吐出，即愈。
月亮初出时、月亮正中时、月亮将落时，面向月端正站
立，不息八通，仰头以意念想象将月光精华之气吸入口内，咽入体内，可使阴气补长。
妇人吸之，可使阴精更加旺盛充实，月经调和，生殖机能旺盛，易于怀孕。
小结∶
龙行气法，是仿效苍龙由天空向下低头注视式，故名龙行气法。要点是“低头下
视，不息十二通。”
最后一段是“ 月精法”。古代养生家认为“阴精所奉其人寿”，月为阴，月光为阴
华，吸之可补人阴精，阴精增长可使人长寿。妇人属阴，吸之可使阴气更加旺盛，月经通
调，易于怀孕。所以“吸月精法”和“吸日精法”是补人阴精阳气的两大功法。吸月精法练
法是∶仰头两眼注视月亮，眼不要睁大，一边望月，一边呼吸。眼疲劳时，可轻轻闭目，记住
月亮形状，如将消失，可睁眼再望。以意念想象将月光吸入口内，再咽入体内，久行即可出现
“皎洁银光”进入体五内腑，使遍体清凉，烦躁渐去，进入“清静境界”，甚至见一团白色光辉
，悬照当前，荡漾体中。
【雁行气法】
低头，将背部倚靠墙壁，进行十二次不呼吸的导引。用意念引导滞留的水饮和积存的宿食从下部排出，身体即可自愈。
【解说】
雁行气法，是将背部靠在墙壁上，低下头，进行十二次闭气导引。用意念引导内气进入胃中，利用内气排除体内停留的痰饮和积存的宿食，使其从肛门排出体外，这样自然就能痊愈。
小结：
《诸病源候论》“卷二十·痰饮病诸候”中说：“行气时，身体挺直、颈部弯曲，使气下行算作一次，可以治愈积存的宿食。”这原本是指仿效鸭子，因为模仿鸭子直身、低头、曲颈的动作，通过闭气行气，所以称为行气法。其方法是背靠墙壁，身体站直，低头、曲颈，进行闭气呼吸，用意念引导气运行，以排除胃肠中的痰饮和宿食。但本书及《云笈七签》在这一节之前都称之为“雁行气法”。近代有“大雁功”，也是从仿生角度命名的，因此仍沿用“雁行气法”这一名称。
【龙行气法】
低头向下看，进行十二次闭气导引。可治愈风疥恶疮，使热邪无法侵入。
咽喉有病的人，面向阳明经方向（注：此处原文可能有误或简略），躺下休息。
用手按摩腹部直到足部，用手握住脚并牵引，低垂手臂十二次，闭气导引十二次。可治愈双脚虚痹无力、不能行走，以及腰脊疼痛。
双手在颈项后交叉握固。用于治疗毒邪。如果未愈，让腹中的大气吐出即可。
月初月亮升起时、月中满圆时、日落时分，面向月亮端正站立，进行八次闭气导引，仰头吸气，想象将月光的精华吸入咽喉咽下。这能使阴气增长，妇女练习此法，可使阴精更加旺盛，生殖通道通畅。
【解说】
龙行气法，叩头向下视，进行十二次闭气导引。可以治疗风疥恶疮，使热邪不能侵入人体。
“咽可候病者”应为“咽喉病”，“以向阳明以达，卧。”这句话似乎有文字缺失。存疑待考。
用手按摩腹部到足部，到达足部后用手握住脚进行拉引，然后将手臂低垂，如此重复十二遍，闭气导引十二通。可以治疗脚病，表现为虚软痹痛、不能行走，以及腰脊疼痛。
用两手交叉握固于颈项处，可以治疗毒邪。如果不愈，从腹部行气，使大量气体吐出，即可痊愈。
月亮初出时、月亮正中时、月亮将落时，面向月亮端正站立，进行八次闭气导引，仰头用意念想象将月光精华之气吸入口内，咽入体内，可以使阴气得到补益和增长。
妇女练习此法，可以使阴精更加旺盛充实，月经调和，生殖机能旺盛，易于怀孕。
小结：
龙行气法，是仿效苍龙由天空向下低头注视的姿态，所以命名为龙行气法。要点是“低头下视，不息十二通。”
最后一段是“月精法”。古代养生家认为“阴精所奉其人寿”，月亮属阴，月光是阴华，吸入它可以补充人的阴精，阴精增长可以使人长寿。妇女属阴，练习此法可以使阴气更加旺盛，月经通调，易于怀孕。所以“吸月精法”和“吸日精法”是补充人体阴精阳气的两大功法。吸月精法的练法是：仰头两眼注视月亮，眼睛不要睁得太大，一边望月，一边呼吸。眼睛疲劳时，可以轻轻闭上眼睛，记住月亮的形状，如果感觉月亮要消失，可以睁眼再看。用意念想象将月光吸入口内，再咽入体内，长久练习就会出现“皎洁银光”进入五脏六腑，使全身清凉，烦躁逐渐去除，进入“清静境界”，甚至看到一团白色光辉，悬照在面前，荡漾在体中。
[Goose-Style Qi Method]
Lower the head, lean the back against a wall, and perform twelve cycles of breath retention (breath-holding) guided movement. By using intention to guide retained fluids and accumulated food from the lower body to be expelled, the body will heal itself.
[Explanation]
The Goose-Style Qi Method involves leaning the back against a wall, lowering the head, and performing twelve cycles of breath retention guided movement. Using intention to guide internal qi into the stomach, one uses internal qi to expel retained phlegm-fluids and accumulated food, allowing them to be discharged through the anus; thus, recovery occurs naturally.
Summary:
*Zhubing Yuanhou Lun* (Treatise on the Pathogenesis and Symptoms of All Diseases), "Volume 20: Various Syndromes of Phlegm-Fluid Diseases," states: "When practicing qi circulation, keep the body straight and the neck curved; letting the qi descend counts as one cycle, which can cure accumulated food." This originally referred to imitating a duck; because it mimics the duck's posture of keeping the body straight, lowering the head, and curving the neck while practicing breath-retention qi circulation, it was named the Qi Circulation Method. The method involves leaning the back against a wall, standing straight, lowering the head, curving the neck, practicing breath-retention breathing, and using intention to guide qi to expel phlegm-fluids and accumulated food in the gastrointestinal tract. However, both this book and *Yunji Qiqian* refer to this section prior to this point as the "Goose-Style Qi Method." Modern practices such as "Great Goose Gong" are also named from a biomimetic perspective, so the name "Goose-Style Qi Method" is still used.
[Dragon-Style Qi Method]
Lower the head and look down, performing twelve cycles of breath retention guided movement. It cures wind-induced scabies and severe sores, preventing heat pathogens from entering.
For those with throat diseases, face the direction of the Yangming meridian and lie down.
Massage the abdomen with hands down to the feet. Hold the feet with hands and pull/guide them. Lower the arms for twelve cycles, and practice breath retention for twelve cycles. It cures deficiency-type bi-syndrome in the feet and legs where walking is difficult, as well as pain in the waist and spine.
Place hands crossed at the nape of the neck. Treat toxic pathogens. If not cured, exhale the excessive qi from the abdomen.
At the time of the new moon, full moon, and sunset, stand upright facing the moon, and perform eight cycles of breath retention. Raise the head and inhale, visualizing drawing the essence of moonlight into the throat and swallowing it. This nourishes yin qi. For women, practicing this makes yin essence abundant and the reproductive pathway unobstructed.
[Explanation]
The Dragon-Style Qi Method involves bowing the head and looking down, performing twelve cycles of breath retention guided movement. It treats wind-induced scabies and severe sores, preventing heat pathogens from invading the body.
"The throat can monitor disease" should likely read "throat diseases." The phrase "face the Yangming meridian direction to reach, lie down" seems to have missing text. This remains under consideration.
Massage the abdomen with hands down to the feet. Upon reaching the feet, hold the feet with hands and pull/guide them. Then lower the arms, repeating this twelve times, and practice breath retention qi circulation twelve times. It treats foot diseases characterized by weakness, numbness, and pain preventing walking, as well as waist and spine pain.
Cross hands and grasp firmly at the nape of the neck to treat toxic pathogens. If not cured, circulate qi in the abdomen and exhale large amounts of gas to achieve recovery.
At the time of the new moon, full moon, and sunset, stand upright facing the moon, and perform eight cycles of breath retention. Raise the head and use intention to visualize drawing the essence of moonlight into the mouth and swallowing it into the body. This supplements and increases yin qi. Women who practice this make their yin essence more abundant and solid, regulate menstruation, enhance reproductive function, and facilitate pregnancy.
Summary:
The Dragon-Style Qi Method is named after imitating the posture of a green dragon lowering its head to gaze downward from the sky. The key point is "lower the head and look down, perform twelve cycles of breath retention."
The final paragraph describes the "Moon Essence Method." Ancient health cultivators believed that "those whose yin essence is nurtured live long." The moon belongs to yin, and moonlight is the brilliance of yin; inhaling it supplements human yin essence, and increasing yin essence promotes longevity. Women belong to yin; practicing this makes yin qi more vigorous, regulates menstruation, and facilitates pregnancy. Therefore, the "Moon Essence Inhalation Method" and "Sun Essence Inhalation Method" are two major practices for supplementing human yin essence and yang qi. The practice of the Moon Essence Inhalation Method is: raise the head and gaze at the moon with both eyes, without opening them too wide. While gazing at the moon, breathe normally. When eyes feel fatigued, gently close them and remember the shape of the moon; if the image fades, open eyes and gaze again. Use intention to visualize drawing moonlight into the mouth and swallowing it into the body. Long-term practice results in a "bright silver light" entering the five zang and six fu organs, making the whole body cool, gradually dispelling irritability, and entering a state of "tranquility." One may even see a ball of white radiance hanging before them, rippling within the body.