禀先天壬癸之气以生。一者数之始，水者物之初，故曰∶天一生水，水中含生气，
为万物之先，金丹之母，八石之祖，五金之宝。壬金为清，癸水为浊，清为阳气，浊为
阴质，阳气为生阴质，有毒，烹炼得宜，是咸丹药，饵之仙去。生气之初，味固应甘，
润下之性，无毒可知，盖以天一至阴之气，得镇堕润下之性，故能复水火既济，则伤寒
热毒之气辄消，胃中邪逆之气顿解。且五行万物之中，能解一切毒瓦斯者，无过先天生气
上中冲气，铅兼有之，故为解诸毒之首药也。然终是金石之药，与人气血无情，《悟
慎篇》云∶非类难为巧也。铅霜一名铅白霜，用铅杂水银十五分之一，合炼作片，置
醋瓮中密封，经久成霜，乃铅假汞气交感，固醋以拔其英华所结，道家谓之神符。白雪
其味甘酸，气大寒无毒，以酸寒之味，故能除热化痰，敛惊酒毒，止渴之需。脾虚胃寒
肠滑者禁之。黄丹即铅熬所成，味辛气微寒无毒，铅禀先天癸壬之气，得火成丹，则又
有灵通变化之神，体重而降，故能治胃反吐逆、惊痫癫疾、热毒金疮。祛瘀长肉，粉锡
二名，胡粉一名，铅粉一名，官粉系黑铅锻炼变黑为白者也。味辛气寒无毒，体用与粉
相似，性善杀虫，故去伏尸，三虫鳖瘕，寒能解热毒，故疗恶疮毒螫，更治小儿久痢成
疳，和鸡子白服，以粪黑为度，皆以其消积杀虫止痢也。凡食之大便必黑者，此乃还其
本质，所谓色坏还为铅也。膏掺并用，与黄丹同，但能止入气分，不能入血分耳。
铅，镇心安神，治伤寒毒瓦斯，消渴烦热，主鬼疰瘿瘤，止反胃呕哕，蛇蝎伤毒，
炙熨尤奇。若脾胃虚寒，阳火不足者忌之。熔出者名铅，灰能治瘰 。铅霜性冷，亦铅
炼成，止惊悸驱热，解酒毒消痰，疗胸膈闷烦，逐中风痰实，生津止渴，并治吐逆。铅
丹一名黄丹，乃炒铅所作，外科多用，煎膏敷金疮，生长肌肉，住痛湿疮恶疮，血症
疮，膏药必需。掺药亦用，既能解毒散热，复能除湿生新。入药治痫疾，收敛神气，镇
惊安魂，堕痰杀虫，除毒热脐，止反胃吐逆。
主治（痘疹合参） 黄丹，除热镇心，止痛生肌。痘斑星障入眼，同珍珠、轻粉研
末，吹耳，左患吹右，右患吹左，星障渐消神效。铅粉凉血，生肌、杀三虫、鳖瘕，疗
恶疮毒螫，去伏日堕胎。
禀受先天壬癸（天干中代表水和金的符号，此处指代铅的先天属性）之气而生成。一是数字的开始，水是万物的起源，所以说：天一生水，水中蕴含着生机，是万物的先导，金丹的母亲，八石（古代炼丹用的八种矿物药）的祖先，五金（金、银、铜、铁、锡等金属）的宝物。壬金性质清轻，癸水性质重浊，清属于阳气，浊属于阴质，阳气化生阴质，铅本身有毒，但如果烹炼得当，就能成为咸丹药，服用后可以得道成仙。在生气初生之时，味道本应甘甜，其性润下（滋润且向下），可知无毒，这是因为天一的至阴之气，得到了镇堕和润下的特性，所以能够恢复水火既济（心肾相交、阴阳平衡的状态），那么伤寒热毒之气就会消除，胃中邪逆之气顿时解除。况且在五行万物之中，能解一切毒瓦斯（毒性气体或物质）的，没有超过先天生气上中冲气的，铅兼有这些特性，所以是解除各种毒素的首选药物。然而终究是金石类药物，与人的气血无情无义，《悟慎篇》说：不同类的事物难以做到巧妙配合。
铅霜又名铅白霜，是用铅混合十五分之一的水银，合炼成片状，放入醋瓮中密封，经过很长时间结成霜状，这是铅假借汞气交感作用，依靠醋来提取其精华所结成的，道家称之为神符。铅霜味甘酸，气大寒，无毒，因为具有酸寒的味道，所以能清除热邪、化痰，收敛惊悸和酒毒，满足止渴的需求。脾虚、胃寒、肠滑者禁用。黄丹即由铅熬制而成，味辛，气微寒，无毒，铅禀受了先天的癸壬之气，得火炼成丹后，又有了灵通变化的神妙，质地沉重而性降，所以能治疗胃反吐逆、惊痫癫疾、热毒和金疮（刀箭创伤）。祛瘀生肌，粉锡有两个名字，胡粉有一个名字，铅粉有一个名字，官粉是由黑铅锻炼变黑为白而成的。味辛，气寒，无毒，体用与粉相似，性善杀虫，所以能去除伏尸（潜伏体内的寄生虫）、三虫（蛔虫、蛲虫、绦虫等）、鳖瘕（腹部肿块），寒性能解热毒，所以治疗恶疮毒螫，还能治疗小儿久痢成疳（慢性腹泻导致的营养不良综合征），与鸡蛋清同服，以大便变黑为度，都是利用其消积、杀虫、止痢的功效。凡是吃了之后大便必然变黑的，这是还原了它的本质，所谓“色坏还为铅”。膏剂掺入并用，与黄丹相同，但只能进入气分，不能进入血分。
铅，能镇心安神，治疗伤寒毒瓦斯，消渴烦热，主治鬼疰（一种传染性痨病）、瘿瘤（甲状腺肿大等颈部肿块），止反胃呕哕，蛇蝎咬伤中毒，炙烤熨烫效果尤其奇特。如果脾胃虚寒，阳火不足者忌用。熔炼出来的叫铅，铅灰能治疗瘰疬（淋巴结结核）。铅霜性冷，也是由铅炼成，能止惊悸驱热，解酒毒消痰，治疗胸膈闷烦，驱逐中风痰实，生津止渴，并治疗吐逆。铅丹又名黄丹，是炒铅制成的，外科多用，煎膏敷贴金疮，生长肌肉，治疗痛湿疮、恶疮、血症疮，膏药必需。掺药也使用，既能解毒散热，又能除湿生新。入药治疗痫疾，收敛神气，镇惊安魂，堕痰杀虫，除毒热脐，止反胃吐逆。
主治（痘疹合参） 黄丹，除热镇心，止痛生肌。痘斑星障入眼，同珍珠、轻粉研末，吹入耳中，左患吹右，右患吹左，星障逐渐消除，神效。铅粉凉血，生肌，杀三虫、鳖瘕，治疗恶疮毒螫，去伏日堕胎。
Born from the primordial Qi of Ren and Gui (Heavenly Stems representing Water and Metal, here referring to the primordial attributes of Lead). One is the beginning of numbers, Water is the origin of all things, hence it is said: "Heaven generates Water at One." Water contains Sheng Qi (Vital Energy), serving as the precursor to all things, the mother of Golden Elixir (Jin Dan), the ancestor of the Eight Stones (eight mineral drugs used in alchemy), and the treasure of the Five Metals. Ren Metal is clear/light, Gui Water is turbid/heavy; clarity belongs to Yang Qi, turbidity belongs to Yin Substance. Yang Qi generates Yin Substance. Lead itself is toxic, but if properly refined and cooked, it becomes a Xian Dan (Immortal Pill); consuming it leads to immortality. At the initial stage of Sheng Qi, its taste should be sweet; its nature is moistening and descending (Run Xia), indicating it is non-toxic. This is because the supreme Yin Qi of Heaven One possesses the properties of settling/descending and moistening, thereby restoring the state of Water-Fire Ji Ji (Heart-Kidney intersection and Yin-Yang balance). Consequently, the heat-toxic Qi of Shang Han (Cold Damage) dissipates, and the rebellious Qi in the stomach is instantly resolved. Furthermore, among the Five Elements and all things, none can resolve all toxic vapors better than the primordial Sheng Qi's middle-rising Qi. Lead possesses these characteristics, making it the premier herb for resolving various toxins. However, it ultimately remains a mineral drug, devoid of emotional connection with human Qi and Blood. As stated in *Wu Shen Pian*: "Things of different categories are difficult to combine skillfully."
Qianshuang (Lead Frost), also known as Qianbaishuang, is made by mixing lead with one-fifteenth part mercury, refining them into sheets, placing them in vinegar jars sealed tightly, and allowing them to form frost over a long period. This results from the interaction between lead and mercury vapor, where vinegar extracts their essence to form crystals, referred to by Daoists as "Divine Talismans" (Shen Fu). Qianshuang tastes sweet and sour, has a great cold nature, and is non-toxic. Due to its sour and cold flavor, it clears heat, resolves phlegm, arrests palpitations, detoxifies alcohol, and quenches thirst. It is contraindicated in cases of Spleen deficiency, Stomach cold, and loose bowels. Huangdan (Yellow Cinnabar/Minium) is formed by smelting lead. It tastes pungent, has a slightly cold nature, and is non-toxic. Endowed with the primordial Qi of Gui and Ren, when transformed into cinnabar by fire, it gains spiritual flexibility and changeability. Being heavy and descending, it treats gastric reflux and vomiting, convulsions, epilepsy, heat toxicity, and traumatic injuries (Jin Chuang). It removes blood stasis and promotes flesh regeneration. Fuxi has two names; Hufen has one name; Qianfen (Lead Powder) has one name; Guafen is black lead refined from black to white. It tastes pungent, has a cold nature, and is non-toxic. Its body and usage are similar to powder; it excels at killing parasites, thus removing latent corpses (parasites lurking in the body), three worms (roundworms, pinworms, tapeworms), and biema (abdominal masses). Its cold nature resolves heat toxicity, treating severe sores and insect bites. It also treats children's chronic dysentery leading to infantile malnutrition (Gan syndrome); taken with egg white until stools turn black, it works by eliminating accumulation, killing parasites, and stopping dysentery. Any food causing black stools restores its original nature, as described: "When color deteriorates, it returns to lead." Used in plasters mixed with other ingredients, similar to Huangdan, but it enters only the Qi level, not the Blood level.
Lead calms the Heart and anchors the Spirit, treats Shanghan toxic vapors, Xiao Ke (wasting-thirst) with irritability and heat, governs Gui Zhu (contagious tuberculosis-like disease), Ying Liu (goiter/nodules), stops reverse flow and vomiting/hiccups, and treats snake/scorpion venom. Moxibustion and hot compresses are particularly effective. Contraindicated in cases of Spleen-Stomach deficiency-cold and insufficient Yang Fire. Smelted lead is called Lead; Lead Ash treats Luoli (scrofula/tuberculous lymphadenitis). Qianshuang is cold-natured, also refined from lead, arresting palpitations, driving out heat, resolving alcohol toxicity and phlegm, treating chest/diaphragm oppression and irritability, expelling wind-stroke phlegm-solidity, generating fluids, quenching thirst, and treating vomiting/reflux. Qiandan (Lead Red/Minium), also known as Huangdan, is made by roasting lead. It is widely used in external medicine; boiled into plasters for application on traumatic wounds to promote tissue regeneration, relieve pain, treat damp sores, malignant ulcers, and bloody sores. It is essential for plaster preparations. Also used in powders; it detoxifies, disperses heat, removes dampness, and promotes new tissue growth. Internally, it treats epilepsy, consolidates spirit, calms fright, anchors the soul, descends phlegm, kills parasites, removes toxic heat from the umbilicus, and stops vomiting/reflux.
Main Indications (Integration with Smallpox/Rashes): Huangdan clears heat, calms the Heart, relieves pain, and generates flesh. For smallpox spots or corneal opacities affecting the eyes, mix with Zhenzhu (Pearl) and Qingfen (Calomel), grind into powder, and insufflate into the ear: if the left eye is affected, insufflate the right ear, and vice versa. The corneal opacity gradually disappears with miraculous efficacy. Qianfen cools the Blood, generates flesh, kills three worms and biema, treats severe sores and bites, eliminates latent pathogens, and induces abortion.