人自阴阳五行所化，父精母血所成。五官百脉皆归有用，意欲念虑，毕效其能，此万物之灵也。
然当太极初生之始，不特无精无气，而并无形无声，所谓先天也。至气凝而精始结，精结而神乃生，
神生而气日足，气足而精愈固，精固而神更旺于无穷矣。所以在母怀中，得气血以养之，胎渐
次成形，形渐次鼓气，气渐次有知觉运动，胎足后而身出，此先天之后天，后天之先天也。其两仪
所化之精气，五行本体所化之脾胃肝肺肾，皮肤精骨髓妙用，所化之喉舌唇牙齿，耳目口鼻心，
皆未充实，男必待精液满，女必待天癸至，然后五脏六腑，毫发孔窍，十二经络之禀于阴阳五行，父精
母血者乃得大成，此谓后天也。先天固藉后天养，后天又藉天地五行，所生之物养，果能顺时而行，
处处咸宜，人人皆有古皇之寿。无如后世天时人事，与上古异。其中不无气禀所拘，人欲所蔽，起居不
时，饮食不节等弊，故有寿夭强弱之别。虽死生大数，权由天命，而在生强弱，亦任人为。在昔古皇
先圣，知赋畀有殊，则贤愚各别，不能尽人引之入道，因设针灸砭石汤药诸法治之。然医家有泻无补，
有补无泻，万难并行。以故仙佛家始创为导引服气之法，亦顺天地生成之理而行，以补先后阴阳
之不足，其实与儒家之修身养心，医家之攻散泻补，名异理通，途殊效同。条目次第，
已详备于散论总歌及各图中。能根据准绳，日行一二次，永无间断，百日后可终身不药矣。终身行之
不衰，其功效更非浅鲜也。余浅识窃取，不明后验，然就现身观之，甫行一年，老病全失，烟瘾断除，
步履殊强，饮食差健，精神气力较前四十年判若天渊，即此境界，已有仙凡之别。回忆前之烟酒
场中光景，真不啻在孽海魔界中也。今梦初觉，始悟降衷之由，因HT 笔而识之以自警。
人由阴阳五行化生而成，由父亲的精液和母亲的血液结合形成。五官和全身血脉都各司其职，意念、欲望、思虑等心理活动，都能充分发挥其功能，这就是万物之灵长。
然而，在太极初生之初，不仅没有精和气，甚至连形体和声音都没有，这被称为“先天”。直到气凝聚而精开始结成，精结成而神才产生，神产生后气日益充足，气充足后精更加坚固，精坚固后神更加旺盛且无穷无尽。所以在母腹中时，依靠气血来滋养它，胎儿逐渐成形，形体逐渐鼓动产生气，气逐渐产生知觉和运动，胎儿足月后身体出生，这就是先天之后的后天，以及后天中的先天。
由两仪所化的精气，由五行本体所化的脾胃肝肺肾，皮肤、精、骨髓的妙用，所化的喉、舌、唇、齿、牙，耳、目、口、鼻、心，都尚未充实。男子必须等到精液充满，女子必须等到天癸（月经）到来，然后五脏六腑，毫发孔窍，十二经络禀受于阴阳五行、父精母血的部分才得以大成，这称为“后天”。先天固然依赖后天来养育，后天又依赖天地五行所生的事物来养育。如果能顺应时节而行，处处适宜，人人都有上古皇者的寿命。无奈后世的天时人事，与上古不同。其中不免有气质禀赋的拘束，人欲的遮蔽，起居不按时令，饮食不知节制等弊病，所以有了长寿与短命、强壮与虚弱的区别。虽然生死的大数，权力在于天命，但在生时的强弱，也取决于人为。从前上古皇者和先圣，知道天赋赋予各有不同，则贤者与愚者各自有别，不能引导所有人都进入大道，因此设立了针灸、砭石、汤药等各种方法来治疗他们。然而医家中只有泻法没有补法，或有补法没有泻法，很难同时并行。因此仙佛家开始创立导引（通过肢体运动和呼吸调节身心）和服气（呼吸吐纳）的方法，也是顺应天地生成的道理而行，以补充先后天阴阳的不足。其实这与儒家的修身养心、医家的攻邪散结与泻实补虚，名称不同但道理相通，途径不同但效果相同。具体的条目次第，已经在散论总歌及各图中详细备述。如果能根据准绳，每天练习一到两次，永远不间断，一百天后就可以终身不再需要服药了。终身坚持而不衰退，其功效更是不可估量。我见识浅薄，窃取前人智慧，不敢说以后一定验证，但就自身观察来看，刚刚练习一年，老毛病全失，烟瘾断除，步履特别强健，饮食比较健康，精神气力与前四十年判若云泥，仅以此境界，已有仙人与凡人的区别。回忆之前烟酒场所中的光景，真不仅仅是在孽海魔界中啊。如今如梦初醒，才明白上天赋予本性的缘由，因此提笔记录以自我警醒。
Human beings are transformed from Yin and Yang and the Five Elements, formed by the father's essence (Jing) and the mother's blood. The five sense organs and all meridians serve their functions; intentions, desires, thoughts, and reflections fully exert their capabilities. This is the spirit of all living things.
However, at the beginning of the generation of Taiji (Supreme Ultimate), there was not only no essence or Qi, but also no form or sound. This is referred to as "Pre-heaven" (Xiantian). Only when Qi condenses does essence begin to form; once essence forms, Spirit (Shen) arises. When Spirit arises, Qi becomes abundant day by day; when Qi is abundant, essence becomes more solid; when essence is solid, Spirit becomes even more prosperous and infinite. Thus, in the womb, nourished by Qi and Blood, the fetus gradually takes shape; as the form develops, it generates Qi; as Qi develops, perception and movement arise. After the fetal term is complete, the body is born. This is the Post-heaven following Pre-heaven, and the Pre-heaven within Post-heaven.
The essence and Qi transformed by the Two Modes (Liangyi), the spleen, stomach, liver, lungs, and kidneys transformed from the substance of the Five Elements, the subtle functions of skin, essence, marrow, and bones, and the throat, tongue, lips, teeth, gums, ears, eyes, mouth, nose, and heart—all these are not yet full. Males must wait until seminal fluid is full, and females must wait until Tian Gui (menstruation/sexual maturity) arrives. Then, the five Zang organs and six Fu organs, hair follicles, pores, and the twelve meridians—which receive endowment from Yin and Yang and the Five Elements, and from the father's essence and mother's blood—can achieve great completion. This is called "Post-heaven" (Houtian). Pre-heaven relies on Post-heaven for nourishment, and Post-heaven relies on things generated by Heaven, Earth, and the Five Elements for nourishment. If one can act according to the seasons and be appropriate in all aspects, everyone could have the longevity of the ancient emperors. Unfortunately, the timing and human affairs of later generations differ from those of antiquity. There are inevitably constraints due to constitutional endowment and obscurations by human desires, irregular daily routines, and unregulated diet. Hence, distinctions arise between long and short life, and between strength and weakness. Although the major numbers of life and death are determined by Heavenly Mandate, the strength or weakness during life depends on human effort. In ancient times, the emperors and sages knew that endowments varied, leading to differences between the wise and the foolish, and they could not lead everyone into the Dao. Therefore, they established various treatments such as acupuncture, Bian stone (lithotherapy), and herbal decoctions. However, in medicine, there are cases with only purging methods and no tonifying methods, or vice versa, making it difficult to apply both simultaneously. Thus, practitioners of Immortals and Buddhas pioneered methods of Daoyin (guiding and pulling exercises) and Fuqi (swallowing Qi/breathing exercises), acting in accordance with the principles of Heaven and Earth's generation, to supplement the insufficiencies of Pre-heaven and Post-heaven Yin and Yang. In essence, this is consistent in principle with the Confucian practice of cultivating character and nurturing the mind, and with the medical practices of attacking pathogens, dispersing stagnation, purging excess, and tonifying deficiency. Though the names differ, the logic is the same; though the paths differ, the effects are identical. The specific items and sequence have been detailed in the scattered discussions, general songs, and various diagrams. If one follows the standards, practicing once or twice daily without interruption, after one hundred days, one may never need medicine again. Persisting in this lifelong without decline, the efficacy will be far greater than imagined. With my shallow knowledge, I have borrowed from others' wisdom. I do not claim future verification, but observing myself: having practiced for just one year, old ailments have disappeared, the smoking habit has been broken, walking has become particularly strong, diet has improved, and mental energy and physical strength are vastly different from forty years ago—a gap like heaven and earth. Even this state alone shows a distinction between immortal and mortal. Recalling the scenes in previous drinking and smoking circles, it truly felt like being in a sea of sin and demonic realms. Now, waking from a dream, I realize the reason for the innate endowment bestowed by Heaven. Therefore, I write this to warn myself.