可惜许，可惜许，可惜元阳宫里生，一点既出颜色枯，百神泣送真阳去。三魂喜，七魄无，
血败气衰将何补，弄元真物属他人，赤宅元君谁做主？劝世人，须慕道，休慕色，慕色贪淫有何
益？不念形骸积渐枯，逢人强说丹砂力。丹砂力，人不识，谁人肯向身中觅，灵源经里号真铅，
丹华诀内名金液。三茅真君唤作一，子得一时万事毕，圣人秘一不能传，不晓分明暗如漆。一神
去，百神离，百神去后人不知，几度欲说不欲说，临时一点泄天机。一神离，百神悲，日后形悴
却如痴，我今念念说向汝，说时又恐泄天机。男子修成
不漏精，女子修成不漏经，精不漏兮身不朽，经不漏兮可长生。若晓此玄玄外法，便是长生物外人。
与君直说长生理，世上能有几人知。争名逐利心如火，那个回头问道机，哀哉忙忙世上
人，个个不醒似梦里。夜眠昼走岂知老，贪恋荣华秋复春。秋复春兮去如飞，不学长生待几
时。长生有路无人走，只在眼前人不知。君不知兮为君指，还丹大要在神水。真人炼就结成
铅，真铅结汞龙凤髓。腻如膏，白如雪，神仙留下真秘诀。炼归元海号还丹，万神灵兮三尸灭
。三尸灭兮寿数多，把定灵关降龙虎。三千功行自能灵，返老还童归洞府。运匹配，逆顺取，
坎男离女喜同归。自古神仙诀尽同，人人认取本来宗。朝朝只在君家舍，何劳外觅走西东。劝
君急急早须修，莫待红颜变白头。忽然至宝离身去，永劫千生何处求。
Alas, truly alas! That Yuan Yang Qi (Primordial Yang Energy) is born in the Yuan Yang Palace (referring to the lower Dantian or the moving qi between the kidneys). Once it leaks out, the complexion withers, and the hundred deities weep as they see off this True Yang. The Three Souls rejoice, but the Seven Po have no anchor; blood deteriorates, Qi declines—what can supplement them? To play with that Yuan Zhen Wu (Primordial True Substance, i.e., Jing/Essence) ultimately benefits others; who shall be the master of the Chi Zhai Yuan Jun (Red House Primordial Lord, referring to the Heart Spirit or internal governing deity)?
I advise the world to revere the Dao and not to covet lust. What benefit is there in coveting beauty and indulging in lewdness? One fails to reflect on how the physical form gradually withers, yet forcefully boasts to others about the power of Cinnabar (Waidan/External Elixir). The power of Cinnabar is unrecognized by people; who is willing to seek within their own body? In the *Lingyuan Jing* (Scripture of the Spiritual Source), it is called "True Lead" (Zhen Qian); within the *Dan Hua Jue*, it is named "Golden Fluid" (Jin Ye).
The True Lord of Sanmao refers to it as "One" (Yi, representing the Dao, Primordial Qi, or Pre-Heavenly Unity). If you obtain this "One," all matters are completed. The Sages guard this "One" and do not transmit it easily. Without clear understanding, one remains as blind as if in darkness. When one Spirit departs, a hundred Spirits separate; when a hundred Spirits depart, later generations know nothing. I have wanted to speak many times but hesitated, finally revealing a hint of Heaven's Secret at the critical moment. When one Spirit departs, a hundred Spirits mourn; subsequently, the physical frame becomes emaciated, and the person acts like an idiot. I now think of you constantly and tell you, yet while speaking, I fear leaking Heaven's Secret.
If a man cultivates successfully to prevent the leakage of Essence (Jing), and a woman cultivates successfully to prevent the leakage of Menses (Jing), then: if Essence does not leak, the body becomes imperishable; if Menses do not leak, longevity is possible. If one understands this profound method beyond the mundane, one becomes an outsider among living things.
I will speak directly to you about the principle of longevity. How many in the world can know it? Hearts striving for fame and profit burn like fire; who turns back to inquire about the mysteries of the Dao? Alas, the busy people of the world, all unawake, as if in a dream. Sleeping at night and running during the day, how do they know old age has arrived? Greedy for glory and wealth, autumn follows spring. Autumn and spring fly away like lightning; if one does not learn the way of longevity, how long must one wait? There is a path to longevity, yet no one walks it; it is right before one's eyes, yet people do not know. You do not know, so I point it out for you: the key to the Huan Dan (Returning Elixir) lies in Shen Shui (Divine Water). The True Person refines it to form Lead; True Lead combines with Mercury to create the Marrow of Dragon and Phoenix. Fine as paste, white as snow, this is the true secret left by immortals. Refined back into the Yuan Hai (Primordial Sea/Lower Dantian), it is called Huan Dan; myriad spiritual manifestations appear, and the Three Corpses (Sanshi) are extinguished. When the Three Corpses are extinguished, lifespan increases; guarding the Ling Guan (Spiritual Pass/Critical Acupoint) subdues the Dragon and Tiger (Yang and Yin energies). With three thousand merits and deeds, spirituality arises naturally; returning to youth, one returns to the Cave Mansion. Applying matching methods, taking advantage of reversal and順 (Ni and Shun), Kan Man (Water/Male) and Li Nu (Fire/Female) joyfully return together. Since ancient times, all immortal formulas are the same; everyone should recognize their original source. It resides daily in your own house (your body); why labor to seek outside, running east and west? I advise you to cultivate urgently and early; do not wait until rosy cheeks turn to white hair. Suddenly, the supreme treasure leaves the body; through eternal kalpas and thousands of lifetimes, where can it be sought?