先将凡虑涤却，择净室静坐，闭目，鸣天鼓三十有六以集神，咽液三十有六以聚气，而阴户可以阴合，使
众邪不得下居。闭气自一至十，默数九九而止。非闭噎其气也，乃神定气和，绝思忘虑，使鼻之息若有若无。
诊其脉六动为一息，九九者八十一息，总四百八十六动脉也。常存赤气，自其口出，状如火轮，周其室中，定
则内想安寝，自然疾病除而阴邪远矣。
初闭息，经十息至五十息，至百息。气不在上，亦不在下，如游浑沌，不能破散，凡一日一夜，一万三千
五百息。《太微升玄经》云∶气绝曰死，气闭曰仙，魄留守身，魂游上天。先吹退场门中浊气七口，以手指捏目
大小 ，按鼻左右，旋耳摩面，乃以舌抵上 ，撩口中内外津液三十六转，满口咽之，如此三止。漱咽灵液，
灌溉五脏，面乃生光。
《黄庭篇》曰∶元气者出于下丹田，流注于身，凡昼之午则阳极而阴生，故会合于泥丸，阴阳相推，循环无穷。夫
能服气固精，得其节符，则灵气凝变。如紫烟白云。充于三田，升为云，降为雨，以之溉灌五脏。而植根者也
。上纳津液，下勿泄其气，气液充满，如深井之出涌泉，自然洞流无穷，通于鼻门，而入于口，滋于身，如是
则黄铅紫汞生矣。根据时采而炼之，入于丹田，贯诸百节，自然出暗室而照真阳之门，故曰回紫抱黄，入丹田者
，此之谓也。
五气各属一脏，余一气属三焦穴。气者，嘘、呵、 、吹、呼、嘻。嘘属肝，肝主目；呵属心，心主舌；
属肺，肺主鼻；吹属肾，肾主耳，呼属脾，脾主中宫；嘻属三焦。各脏俱有浊气，人夜睡醒时，口中浊气熏
蒸，自不闻耳。口则吐之，鼻则纳之。吐之说，不过初吐浊气，尽即止，后皆津液清丹，全在闭口方能咽下，
若一纳一吐，是随收随散也。
闭气全要腹空，日间端坐申腰，如坐禅法，以鼻纳气照前。夜间须要睡醒，子时后，正卧侧卧无不妙。
闭气之法，勤而行之。《火候篇》曰∶闭气二十有四，其数足矣。出则复闭，用赤龙右搅者七，左搅者九
，漱者十有六、琢齿二，分三咽。先右次左次中。此阴爻也。闭气三十有六，其数足矣。出而复闭，用赤龙左
搅者七，右搅者九，漱者三十有三，琢齿三，分三咽。先左次右次中，此阳爻也。凡闭气一百九十二，以火二
八两 之，学人当明水火既济之法。夫火在心为性，水在肾为命，二者实相须以济焉。肾之水，非心之火养之
则不能上升，心之火，非肾之水藏之则不能下降。夫能长养成就，上际下蟠，旁通曲引于三元九宫、五脏百节
，斯可以保固而长存也。
常人每卧时，垂足闭气，舌抵上 ，目视顶，提缩谷道，即咽津一口，共行九遍。热擦肾 穴，九九数
。少年可御梦
遗，老人可愈频溺。
首先，要涤除所有的杂念，选择洁净安静的房间静坐，闭上眼睛，鸣响天鼓三十六次以聚集精神，吞咽津液三十六次以汇聚气息，同时使阴户自然闭合，从而使各种邪气无法在下部停留。闭气默数从一到十，按照九九八十一的规律计数后停止。这并不是强行憋气导致窒息，而是让心神安定、气息平和，断绝思虑，使鼻息的出入若有若无。诊断脉象时，脉搏跳动六次算作一息，九九八十一息，总共是四百八十六次动脉搏动。心中常存想赤色之气，从口中呼出，形状如火轮，环绕整个居室，心神定下来后内观安寝，疾病自然会消除，阴邪也会远离。
刚开始闭气时，经过十息到五十息，再到一百息。气息既不在上部，也不在下部，如同在混沌中游荡，不可破散。人一天一夜大约呼吸一万三千五百次。《太微升玄经》说：气息断绝叫做死，气息闭藏叫做仙，魄留在身体里，魂游历上天。先吹七口气退去肛门中的浊气，用手指捏按眼睛内外眼角，按压鼻子左右两侧，旋转耳朵按摩面部，然后用舌头抵住上颚，搅动口腔内外产生津液三十六圈，满口后吞咽下去，如此重复三次。漱口吞咽灵液，灌溉五脏，面色就会生光。
《黄庭篇》说：元气出自下丹田，流注于全身。凡是白天的午时，阳气极盛而阴气始生，所以会合于泥丸宫，阴阳相互推演，循环无穷。如果能服气固精，掌握其节律符契，那么灵气就会凝结变化，如紫烟白云。充盈于上、中、下三丹田，上升为云，下降为雨，用来灌溉五脏。而上部接纳津液，下部不泄露气息，气与液充满，如同深井涌出泉水，自然洞流无穷，通于鼻门，进入口中，滋润身体，像这样就能生出黄铅紫汞（指体内精气）。根据时机采集并炼化它，进入丹田，贯通各个关节，自然能走出暗室照亮真阳之门，所以说“回紫抱黄”，进入丹田，就是这个意思。
五脏之气各属于一个脏器，余下一气属于三焦穴。气的声音有嘘、呵、呼、吹、嘻六种。嘘气属肝，肝开窍于目；呵气属心，心开窍于舌；呬气属肺，肺开窍于鼻；吹气属肾，肾开窍于耳；呼气属脾，脾主中宫；嘻气属三焦。各个脏器都有浊气，人在夜间睡醒时，口中浊气熏蒸，自己闻不到。浊气要从口吐出，清气要从鼻吸入。吐气的方法，不过是初吐浊气，吐尽就停止，之后都是清丹般的津液，必须闭口才能咽下，如果一进一出，就是随收随散，没有效果。
闭气全要靠腹部空虚，白天端正坐姿伸腰，像坐禅的方法一样，用鼻纳气照前面的方法做。夜间必须睡醒后，子时以后，正卧或侧卧都无不妙处。闭气的方法，勤奋地练习。《火候篇》说：闭气二十四次，数量就够了。呼气后再闭气，用舌头（赤龙）向右搅动七次，向左搅动九次，漱口十六次，琢齿两次，分三次咽下。先右后左再中。这是阴爻的法度。闭气三十六次，数量够了。呼气后再闭气，用舌头向左搅动七次，向右搅动九次，漱口三十三次，琢齿三次，分三次咽下。先左后右再中，这是阳爻的法度。总共闭气一百九十二次，用火和水两种方法调和，学医的人应当明白水火既济的道理。火在心代表性，水在肾代表命，两者确实需要互相济助。肾的水，如果没有心的火来滋养就不能上升，心的火，如果没有肾的水来收藏就不能下降。如果能长久养育成就，上达下贯，旁通曲引于三元九宫、五脏百节，这样就可以保固而长存了。
常人每次睡觉时，垂足闭气，舌头抵住上颚，目光注视头顶，提缩谷道（肛门），然后咽一口津液，共进行九遍。搓热擦揉肾俞穴，进行九九八十一次。少年可以抵御梦遗，老人可以治愈频尿。
First, cleanse all distracting thoughts, choose a clean and quiet room for sitting meditation, close your eyes, strike the "Heavenly Drum" (ringing ears by pressing palms on them) thirty-six times to gather the spirit, swallow saliva thirty-six times to accumulate Qi, and naturally close the yin aperture so that various pathogenic factors cannot settle in the lower body. Hold the breath while silently counting from one to ten, stopping after completing nine cycles of nine (eighty-one counts). This is not about forcibly stifling the breath until suffocation, but rather letting the mind be calm and the Qi harmonious, cutting off thoughts and worries, so that breathing through the nose seems to exist and not exist simultaneously. In pulse diagnosis, six beats constitute one respiration; eighty-one respirations amount to four hundred and eighty-six arterial pulses. Constantly visualize red Qi exiting the mouth, shaped like a wheel of fire, circling the room. When the mind is settled and internal visualization leads to peaceful rest, diseases will naturally disappear and Yin pathogens will stay away.
Initially holding the breath, progressing from ten respirations to fifty, then to one hundred. The Qi is neither in the upper nor lower parts, wandering like chaos, unbreakable. A person breathes approximately thirteen thousand five hundred times in a day and night. The *Taiwei Shengxuan Jing* states: "When Qi ceases, it is death; when Qi is held/contained, it is immortality; the Po (corporeal soul) remains in the body, while the Hun (ethereal soul) travels to heaven." First, blow out seven breaths to expel turbid Qi from the anus. Use fingers to pinch the inner and outer canthi of the eyes, press the sides of the nose, rotate the ears, and massage the face. Then, place the tongue against the upper palate, stir inside and outside the mouth to generate saliva for thirty-six turns, and swallow when the mouth is full. Repeat this three times. Rinse and swallow the spiritual fluid to irrigate the five Zang organs, causing the face to glow.
The *Huangting Pian* says: "Primordial Qi originates from the Lower Dantian and flows throughout the body. At noon during the day, Yang reaches its peak and Yin begins to arise, thus converging at the Niwan Palace. Yin and Yang push each other in an endless cycle." If one can practice Qi swallowing and consolidate essence, adhering to its rhythm and rules, spiritual Qi will condense and transform, appearing like purple smoke and white clouds. It fills the Upper, Middle, and Lower Dantians, rising as clouds and descending as rain to irrigate the five Zang organs. By accepting fluids above and preventing Qi leakage below, Qi and fluids become abundant, like a spring gushing from a deep well, flowing endlessly, connecting the nasal opening to the mouth, nourishing the body. In this way, Yellow Lead and Purple Mercury (metaphors for refined essence and Qi) are generated. According to timing, collect and refine them into the Dantian, penetrating all joints. Naturally, one emerges from darkness to illuminate the gate of True Yang. Hence it is said, "Returning Purple and Embracing Yellow," entering the Dantian, which is what this refers to.
Each of the Five Qi belongs to one Zang organ, and the remaining Qi belongs to the Sanjiao (Triple Burner) acupoint. The sounds associated with Qi are Xu, He, Si, Chui, Hu, and Xi. Xu belongs to the Liver, which opens into the eyes; He belongs to the Heart, which opens into the tongue; Si belongs to the Lungs, which open into the nose; Chui belongs to the Kidneys, which open into the ears; Hu belongs to the Spleen, which governs the central palace; Xi belongs to the Sanjiao. Each Zang organ has turbid Qi. Upon waking at night, turbid Qi steams in the mouth, though one may not smell it. Turbid Qi should be exhaled through the mouth, and clear Qi inhaled through the nose. The method of exhalation involves initially blowing out turbid Qi until exhausted, then stopping. Thereafter, only clear, elixir-like saliva remains, which must be swallowed with the mouth closed. If one inhales and exhales alternately, the energy is gathered and dispersed simultaneously, rendering it ineffective.
Holding the breath requires an empty abdomen. During the day, sit upright and stretch the waist, similar to Zen meditation methods, inhaling through the nose as described previously. At night, practice after waking up; after the Zi hour (11 PM - 1 AM), lying supine or on either side is equally beneficial. Practice the method of holding breath diligently. The *Huohou Pian* states: "Hold the breath twenty-four times; this number is sufficient." Exhale and then hold again. Stir the tongue (Red Dragon) to the right seven times, to the left nine times, rinse the mouth sixteen times, grind the teeth twice, and swallow in three portions. Order: Right, then Left, then Center. This represents the Yin Yao (line). Hold the breath thirty-six times; this number is sufficient. Exhale and hold again. Stir the tongue to the left seven times, to the right nine times, rinse the mouth thirty-three times, grind the teeth three times, and swallow in three portions. Order: Left, then Right, then Center. This represents the Yang Yao (line). Total holding of breath amounts to one hundred and ninety-two times, balanced by Fire and Water. Practitioners must understand the method of Water and Fire Mutual Completion. Fire resides in the Heart representing Nature (Xing), and Water resides in the Kidneys representing Life (Ming); these two truly require mutual assistance. Kidney Water cannot rise without being nurtured by Heart Fire, and Heart Fire cannot descend without being stored by Kidney Water. If one can nurture and achieve this state, extending upwards and downwards, and connecting laterally and intricately through the Three Yuan, Nine Palaces, Five Zang organs, and hundred joints, one can preserve and sustain longevity.
Ordinary people, when going to bed, should hang their feet, hold their breath, place the tongue against the upper palate, gaze at the crown of the head, contract the Gu Dao (anal sphincter), and then swallow a mouthful of saliva. Perform this nine times. Rub the Shenshu acupoints until warm, performing eighty-one repetitions (9x9). For youths, this can prevent nocturnal emissions; for the elderly, it can cure frequent urination.