一升便提，气气归脐，一降便咽，水火相见。
凡修养家，以鼻为天门，以口为地户，地户常闭。天门常开，故此法只以鼻息为候。
遇鼻入息曰吸，即便升气，将下部前后着力一提，气气归脐也。遇鼻出息曰降，即便放身
自在，徐徐出气，咽津一口， 然有声，亦以意存送于脐中，乃是一降便咽，水火相见也
。盖脐中乃真元所聚之处，真气悉藏于此，原胎息之所也，凡咽纳之际，若有津液，尤为妙
也。一升一降，使气相会，心肾相合，水火相见，所以谓炼成离女液，咽尽坎男精也。如此
行之，不计度数，不拘时候，要行即行，要止即止，一身之后，脐轮火炽，两肾汤煎，腹中
气转，如雷之鸣，小便渐减，久而百病皆除，延年益寿矣。
积气生精，不外神气相守之功，虽功同而用则异也。凡精不足者，与欲开关者，俱宜用积
气生精之功。凡神气不足者，与开关后者，俱宜用神气相守之功，若人于酒色财气、思虑过度，
耗其精神者，丹田空虚，下元虚冷无力，入房易
败，种子不结不射，宜于玄关行真息升降。于子后午前，或食少腹虚之际，运机用息，内联呼吸
，每于此玄关升呼降吸，为一息，俱会于命蒂之处。行真息即生真气，有真气即生真精，是积
息正所谓积气也，积气正所谓生精也。何也？真息乃气之阖辟，真气乃精之父母，故炼士欲积气
生精；须于积息中求之，每节积三十息，咽津一口，共积至十二节，以合周天一年三百六十日之
数，数完自觉气满精生矣。行旬日功，禁欲节劳，保守精气，自有奇验。久久行之，则精气生旺
，诸病不生，开关之功全赖于此。凡一节三十息完，生华池神水一满兑，是验也。若津液不生，
功夫不到，必须另为。
一升即提，气气归脐；一降即咽，水火相见。
凡是修养之人，以鼻为天门，以口为地户，地户（口）常闭，天门（鼻）常开，所以此法只以鼻息作为操作的关键。
遇到鼻子吸气时称为“吸”，随即提升气息，将下部前后用力一提，使气息归于脐部，这就是“气气归脐”。遇到鼻子呼气时称为“降”，随即放松身体自在舒展，缓缓呼气，吞咽一口津液，发出声音，同时用意念将其送入脐中，这就是“一降便咽，水火相见”。
大概脐中是真元聚集的地方，真气都藏于此，也是胎息的所在之处。凡是在吞咽和纳气的时候，如果有津液，尤为奇妙。一升一降，使气相遇，心肾相合，水火相见，所以称之为炼成离女之液，咽尽坎男之精。
像这样练习，不计较次数，不拘束时间，要练就练，要停就停。一段时间后，脐轮如火炽热，两肾如汤煎煮，腹中气机转动，如雷声鸣响，小便逐渐减少，久而久之百病皆除，延年益寿。
积累气息以产生精气，不外乎是神与气相守的功夫，虽然功夫相同但用途则不同。凡是精气不足的人，以及需要开启关窍的人，都适宜使用积气生精的功夫。凡是神气不足的人，以及在关窍开启之后的人，都适宜使用神气相守的功夫。如果有人在酒色财气、思虑过度方面，耗损了精神，导致丹田空虚，下元虚冷无力，行房事容易败坏，种子不结或不射，适宜在玄关进行真息的升降练习。
在子时过后到午前，或者进食后腹部尚虚的时候，运用机关调动呼吸，内在联系呼吸，每次在此玄关处，升呼降吸，算作一息，都汇聚于命蒂之处。练习真息就能产生真气，有真气就能产生真精，这就是所谓的积息正是积气，积气正是生精。为什么呢？真息是气的开合，真气是精的父母，所以修炼之士想要积气生精，必须在积息中寻求。每节积累三十息，吞咽一口津液，共积累至十二节，以符合周天一年三百六十日的数理。数完自觉气满精生。
练习十天，禁止欲望、节制劳累，保守精气，自然会有奇效。长久坚持，则精气生旺，诸病不生，开关的功夫全赖于此。凡是完成一节三十息，生出华池神水充满兑卦之位，这是验证的标志。如果津液不生，说明功夫未到，必须另外调整方法。
Lift upon rising, and qi returns to the navel; swallow upon descending, and water and fire meet.
For those engaged in cultivation, the nose is the Heavenly Gate (Tianmen), and the mouth is the Earthly Door (Dihhu). The Earthly Door should remain closed, while the Heavenly Gate remains open. Therefore, this method relies solely on nasal breathing as the guide.
When inhaling through the nose, it is called "inhale"; immediately lift the qi, exerting effort in the lower front and back to raise slightly, causing the qi to return to the navel, which is "qi returning to the navel." When exhaling through the nose, it is called "descend"; immediately relax the body freely, exhale slowly, swallow a mouthful of saliva, making a sound, and simultaneously use intention to send it into the navel. This is "swallowing upon descending, water and fire meeting."
The navel is where the True Yuan (True Origin) gathers, where true qi is stored, and it is the site of fetal respiration (Taixi). Whenever swallowing and receiving qi, if there is saliva, it is particularly wondrous. Rising and descending cause qi to meet, heart and kidney to combine, and water and fire to meet. Thus, it is said to refine the liquid of the Li trigram (Fire/Woman) and swallow the essence of the Kan trigram (Water/Man).
Practice thus without counting repetitions or restricting time; practice when you wish, stop when you wish. After a period, the Qi wheel at the navel will feel like blazing fire, both kidneys like boiling soup, abdominal qi will rotate sounding like thunder, urination will gradually decrease, and after a long time, all diseases will be eliminated, extending life and benefiting longevity.
Accumulating qi to generate essence is nothing other than the merit of Shen (Spirit) and Qi abiding together. Although the method is the same, its application differs. For those with insufficient essence and qi, and for those needing to open the gates, the merit of accumulating qi to generate essence is suitable. For those with insufficient Shen and Qi, and for those after opening the gates, the merit of Shen and Qi abiding together is suitable. If one has consumed their spirit and essence due to wine, lust, wealth, anger, and excessive thinking, leading to an empty Dantian (Elixir Field), cold and weak lower Yuan (Lower Origin), susceptibility to failure during intercourse, inability to conceive or ejaculate, one should practice the ascending and descending of true breath at the Xuan Guan (Mysterious Pass).
Between Zi hour (11 PM - 1 AM) and mid-morning, or when the abdomen is empty after eating, operate the mechanism using breath, internally linking respiration. At each Xuan Guan, exhale while rising and inhale while descending, constituting one breath, all converging at the Ming Di (Life Root). Practicing true breath generates true qi; having true qi generates true essence. This accumulation of breath is precisely accumulating qi, and accumulating qi is precisely generating essence. Why? True breath is the opening and closing of qi, and true qi is the parent of essence. Therefore, cultivators wishing to accumulate qi and generate essence must seek it within the accumulation of breath. Accumulate thirty breaths per segment, swallow one mouthful of saliva, totaling twelve segments, corresponding to the number of 360 days in a year of the microcosmic orbit (Zhou Tian). Upon completion, one will naturally feel qi full and essence generated.
Practice for ten days, abstain from desires, conserve labor, preserve essence and qi, and miraculous effects will naturally appear. Long-term practice causes essence and qi to flourish, prevents various diseases, and the work of opening gates relies entirely on this. Completing one segment of thirty breaths produces enough Shui Shen Shui (Divine Water of the Hua Pool) to fill the Dui trigram position; this is the sign. If no saliva is produced, the skill is not yet attained, and another method must be adopted.