象皮，味甘，气平，无毒。专能生肌长肉，定狂止呕吐如神，世人未知也。其皮最难碎，
人
身怀之三日，研之则如粉矣。世人只用之外科神效，而不知入之内治尤奇也。
或问象皮性最易收敛，尤能长肉，为金疮之要药，用之外治宜也，用之内治，恐非所宜，
而
子曰定狂止呕吐，何也？夫象皮气味和平，调和五脏，实能无迕耳。所以取其性最收敛，尤
能长肉，非止外治，实能定狂止呕也。
白马茎，味甘、咸，气平，无毒。悬壁阴干，务过百日。用酒煮干，晒干用。专益阳道
修伟
，添精益髓，绝阳可兴，小阳可长，然必加入人参、白术、山茱萸、麦冬、杜仲、熟地、枸
杞、柏子仁、淫羊藿、枣仁、当归、黄 、白芥子、茯神、牛膝之类，同用尤灵，否则平平
也。用之生子则无衍；用之取乐必有祸。
或疑白马茎之可以兴阳，已属怪谈，子又曰长阳，不更怪乎？曰∶嗟乎。何怪也。天地
生一
物，必供人之取用。人有一缺陷，必生一物以补苴。白马茎之长阳，正天生之以补人世之缺
陷也。天下男子不能种子者，非尽由于命门之寒，亦非由于肾水之不足，往往阳小而不足以
动妇女之欢心，而所泄之精，隔于胞胎之门者甚远，不能直射入其中，则胎不结而无嗣以绝
者比比也。世人不知其故，徒用补阳之药，而阳实未衰也，徒用补阴之药，而阴亦未亏也。
服药终身，叹息于无可如何，不重可悲乎。铎亲受异人之传，不将此等秘旨广传人世，不几
负上天生物生人之至意乎，故罄加阐扬，使天下万世，无子者尽有子也，余心乃大慰矣。然
此长阳之说，为救无子者也。倘有子者，窍鄙人之言，修合春方，单以长阳眩奇，以助人之
淫欲，受天诛击，非铎之咎也。（〔批〕白马茎长阳，前人不敢轻道者，恐于天谴也。远公
书言勿隐者，原人生子也。世人用之生子则无愆，用之取乐必有祸。）
象皮，味道甘甜，性质平和，没有毒性。专门能够促进肌肉生长、修复创面，治疗狂躁和呕吐的效果神奇，世人并不了解这一点。它的皮质非常难以捣碎，人随身携带三天后，再研磨就会变成粉末一样。世人只把它用于外科治疗的特效药，却不知道它用于内科治疗更加奇妙。
有人问：象皮的性质最容易收敛，尤其能促进肌肉生长，是金疮（金属利器造成的创伤）的重要药物，用于外治是合适的；但用于内治，恐怕不太适宜，您却说它能定狂止呕，这是为什么呢？回答说：象皮的气味和平，能调和五脏，确实不会造成违背（病情）。所以取它性质最收敛、尤能长肉的特点，不仅限于外治，实际上也能定狂止呕。
白马茎（马阴茎），味道甘、咸，性质平和，没有毒性。悬挂在墙壁上阴干，务必超过一百天。用酒煮至干燥，晒干后使用。专门补益性功能，使生殖器修长伟岸，增添精液、填补骨髓，阳痿者可重新勃起，短小者可增长，但是必须加入人参、白术、山茱萸、麦冬、杜仲、熟地黄、枸杞子、柏子仁、淫羊藿、酸枣仁、当归、黄芪、白芥子、茯神、牛膝等药材，共同使用才特别灵验，否则效果平平。用它来求子则不会有差错；用它来寻欢作乐必定招致灾祸。
有人怀疑白马茎可以兴阳，已经属于怪谈，我又说能让阳具增长，不是更奇怪吗？回答说：唉！有什么奇怪的。天地生出一物，必然供人取用。人有某种缺陷，必然生成一物来弥补。白马茎能使阳具增长，正是天生出来弥补人世缺陷的。天下男子不能生育的，不全是因为命门火衰寒，也不全是因为肾水不足，往往是因为阳具细小不足以打动妇女的心，而且射出的精液，距离子宫口很远，不能直接射入其中，导致胎元不结、没有后代而断绝的情况比比皆是。世人不知道这个缘故，只用补阳的药，其实阳气并未衰弱；只用补阴的药，其实阴气也未亏损。服药终身，叹息于无可奈何，不是很可悲吗？我陈士铎亲自接受异人的传授，如果不将这些秘旨广泛传播于世，岂不是辜负了上天化生万物、化生人类的深意呢？所以我极力阐发弘扬，使天下万世无子的人都能有子，我的心才能大大安慰。然而，这种让阳具增长的学说，是为了救治无子之人的。如果有子女的人，听信鄙人的话，配制春药，单凭让阳具增长来炫耀奇特，以助长人的淫欲，受到上天的惩罚打击，就不是我的过错了。（〔批注〕前人不敢轻易谈论白马茎长阳的功效，是担心遭到天谴。远公书信中说不隐瞒，原本是为了让人生子。世人用它来求子就没有过错，用它来寻欢作乐必定有灾祸。）
Elephant Skin (Xiangpi), sweet in taste, neutral in nature, non-toxic. It is specifically capable of generating flesh and promoting tissue regeneration, and its efficacy in calming mania and stopping vomiting is miraculous, yet this is unknown to the general public. Its hide is extremely difficult to crush; if carried on one's person for three days, it can then be ground into a powder. The public only uses it as a miraculous remedy for external surgical applications, unaware that its use in internal medicine is even more extraordinary.
One might ask: Elephant skin has a strong astringent property and excels at promoting flesh growth, making it an essential herb for metallic wounds (Jinchuang). Its use in external treatment is appropriate, but its use in internal treatment seems unsuitable. Yet you claim it calms mania and stops vomiting. Why? I reply: The flavor and nature of elephant skin are harmonious; it harmonizes the five Zang organs and indeed does not cause any adverse deviation from the condition. Therefore, utilizing its strong astringency and ability to promote flesh growth, it is not limited to external treatment; it effectively calms mania and stops vomiting internally.
Horse Penis (Baima Jing), sweet and salty in taste, neutral in nature, non-toxic. It should be hung against a wall to dry in the shade, ensuring the process lasts over one hundred days. It is then boiled in wine until dry, and sun-dried before use. It specifically tonifies sexual function, enhancing the size and stature of the genitalia, replenishing essence and marrow, restoring potency in cases of impotence, and promoting growth in cases of underdevelopment. However, it must be combined with herbs such as Ginseng Radix et Rhizoma (Renshen), Atractylodis Macrocephalae Rhizoma (Baizhu), Corni Fructus (Shanzhuyu), Ophiopogonis Radix (Maidong), Eucommiae Cortex (Duzhong), Prepared Rehmanniae Radix (Shudi), Lycii Fructus (Gouqi), Platycladi Semen (Baiziren), Epimedii Herba (Yinyanghuo), Ziziphi Spinosae Semen (Zaoren), Angelicae Sinensis Radix (Danggui), Astragali Radix (Huangqi), Brassicae Semenis Albus (Baijiezi), Poria (Fushen), and Achyranthis Bidentatae Radix (Niuxi) to achieve superior efficacy; otherwise, its effect is mediocre. Used for procreation, it causes no harm; used merely for pleasure, it invites disaster.
Some doubt that horse penis can enhance yang function, considering it a strange tale; furthermore, claiming it promotes growth seems even more bizarre. I answer: Alas! What is strange about this? Heaven and Earth produce every thing for human use. Whenever humans have a deficiency, Nature produces a corresponding remedy to fill that gap. The ability of horse penis to enhance penile growth is precisely Nature’s provision to compensate for human physical deficiencies. Among men worldwide who are infertile, it is not solely due to coldness of the Gate of Life (Mingmen), nor solely due to insufficiency of Kidney Water. Often, the penis is too small to arouse women, and the ejaculated semen falls far short of the uterine entrance, unable to penetrate directly, resulting in failure to conceive and lack of heirs—a situation seen everywhere. People do not understand this cause; they blindly use yang-tonifying herbs when yang is not actually deficient, and yin-tonifying herbs when yin is not actually depleted. They take medicine for a lifetime, sighing in despair, which is truly pitiable. I, Chen Shiduo, personally received transmission from an extraordinary master. If I do not widely disseminate these secret instructions, would I not betray Heaven’s profound intention to create all things and humanity? Therefore, I exhaustively elaborate and promote this knowledge, so that childless people throughout the world and future generations may have children, bringing great comfort to my heart. However, this theory of enhancing penile growth is intended to cure infertility. For those who already have children, if they heed my words to prepare aphrodisiacs, relying solely on penile enhancement to display novelty and aid lustful desires, they will suffer heavenly punishment. This blame lies not with me. [Commentary: Predecessors dared not lightly discuss the growth-enhancing properties of horse penis, fearing heavenly retribution. Yuan Gong’s letters stated there should be no concealment, originally for the sake of procreation. Using it for procreation incurs no fault; using it for pleasure inevitably brings disaster.]