一名铅白霜。取铅杂水银十五分之一合炼。作片如钱。有孔穿成串。用瓦盆盛生醋。
横铅串于盆。离醋三寸。仍以瓦盆覆之。置阴处。候生霜。刷下。仍合住。（濒湖）
气味甘酸。性极冷。消痰。（治风痰）去膈热涎塞。胸膈烦闷。治中风痰实。消瘅风惊
谵妄。（婴孺惊滞药用之尤多）疗舌病及咽喉证。铅霜乃铅假汞气交感。因醋以拔其英华。
道家谓之神符白雪。病在上焦者。宜此清镇之。（濒湖） 凡中风惊悸。未有不由痰热所生。
胸膈烦闷多渴。亦火热炎灼所致。铅霜甘寒。能除热生津。并治吐逆。镇惊去怯。（仲淳） 铅
霜涂木瓜。即失酸味。金克木也。（宗 ） 痰饮 化涎散。治热痰。利胸膈。止烦渴。凝
水石 一两。铅霜马牙硝雄黄俱另研各一钱。枯矾炙甘草各二钱半。龙脑少许。为细末。研
匀。每服一钱。水调下。小儿风热痰涎。用沙糖水调服半钱。此药大凉。不可多服。法制半
夏。消饮化痰。壮脾顺气。用大半夏汤泡洗七遍。浓米泔浸一日夜。每半夏一两。用白矾一
两半。研细。温水化浸半夏。水出两指许。频搅。冬月放暖处。浸五日夜。取出焙干。再用
铅霜一钱。温水化浸一日夜。通七日尽取出。后用浆水慢火煮。弗令滚。候浆水极热。取出
焙干。瓷器收贮。每服一二粒。食后细嚼。温姜汤下。谵妄 镇心丸。治心风。狂言多惊。
迷闷恍惚。牛黄铅霜铁粉各七钱半。朱砂水飞。龙齿天竺黄各研细。龙胆草远志肉干地黄各
半两。金箔五十片。人参茯神犀角屑各一两。为细末。和匀。炼蜜丸小豆大。每服七丸。竹
叶汤下。惊□铁粉散。治风惊。铁粉朱砂铅霜天竺黄。用竹沥汤调下。每服五分。消瘅□甘
露丸。解壅毒。退风热。治口舌干燥。寒水石 二斤。马牙硝三两。铅霜炙甘草龙脑各七钱
半。为细末。研匀。糯饭和丸弹子大。每取半丸。食后用新汲水磨化服。木舌□马牙硝丸。
马牙硝七钱半。铅霜元精石寒水石麝香大黄各五钱。枯矾一钱二分。炙甘草二钱半。为细末。
研匀。炼蜜丸如小弹子大。每含一丸咽津。此证甘露丸亦治之。绿云散。治舌上生疮。铜绿
铅霜各等分。同研极细。每用少许。掺舌上。咽喉□龙麝聚圣丹。治心脾客热。毒瓦斯攻冲咽
喉。赤肿疼痛。或成喉痹。或结硬不消。经久不瘥。或舌本肿胀。满口生疮。饮食难进。南
硼砂川芎各一两。生地黄犀角屑羚羊角屑元参桔梗升麻连翘琥珀铅霜各五钱。人参赤苓马牙
硝脑子麝香各三钱。朱砂牛黄各二钱。为细末。炼蜜丸。每两作十丸。用金箔五十片为衣。
每服一丸。薄荷汤或新汲水化下。或细嚼。或噙化。津液咽下。皆可。祛毒牛黄丸。治咽喉
肿痛。舌本强硬。满口生疮。涎潮喘急。饮食难进。胸膈不利。牛黄三钱半。人参琥珀犀角
细末硼砂生地桔梗各半两。雄黄飞一两。元参升麻各三钱。蛤粉水飞四两。寒水石 二两。
朱砂研飞七钱。铅霜脑子各一钱。为细末。炼蜜丸如小弹子大。金箔为衣。瓷器收贮。每服
一丸。薄荷汤或新汲水化。食后日进二三服。噙化亦得。黄 散。治咽喉生疮痛疼。黄 槟
榔牛蒡紫菀栀仁赤苓生甘草各半两。元参麦冬各一两。升麻黄芩各三钱。锉碎。每服一钱。
水一盏。煎六分。温服。桃红散。治咽疮肿赤紫色。嗌痛咽物有妨。金银箔各十片。铅霜少
许。寒水石四两。元精石二两。（二味捣碎。入一盒子内。 令通赤。取出。埋土中。出火
毒。研细。）马牙硝朱砂炙甘草各一两。为细末。研匀。每服一字。甘草水调下。或以稀糯
粥丸如豌豆大。含化津咽。喉痹肿痛。铅霜甘草半两。青黛一两。为末。醋糊丸芡子大。每
含咽一丸。立效。悬痈肿痛。铅霜一分。生炙甘草一分。为末。绵裹含咽。口干龈烂。气臭
血出。不拘大人小儿。铅霜铜绿各二钱。白矾豆许。为末扫之。
小儿惊热（心肺积热夜卧多惊）铅霜牛黄各半分。铁粉一分。研匀。每服一字。竹沥调
下。惊风痫疾。喉闭牙紧。铅霜一字。蟾酥少许。为末。乌梅肉蘸药。于龈上揩之。仍吹通
关药。良久便开。
〔论〕 铅本天一坎水所凝。而为五金之祖。是金在水中。所谓壬金为阳而气能上交者
也。水银出于丹砂。离中之坎。内蕴金精。乃坎水之母气也。其性又能下交二者。因变化而
吐其精华。则以至阴精气。感乎离中之坎以下行。而坎水母气本于离者。却能感壬金之阳而
合之。如之何不治上焦心肺之热乎。即挟肝火。亦藉其清镇而降坠矣。其性极冷。非久服
常用之物。病已即去之。胃弱脾虚肠滑者。不宜。风寒咳嗽多痰者。并忌。（仲淳）
铅霜，又名铅白霜。制作方法是取铅与水银按十五分之一比例混合炼制。制成如铜钱大小的片状，中间有孔，可穿成串。用瓦盆盛放生醋，将铅串横架在盆上，使铅距离醋面三寸，再用瓦盆覆盖，放置在阴凉处，待表面生成霜后刷下，再重新合住继续生成。（李时珍）
其气味甘、酸，性极冷。能消除痰饮（治疗风痰）。去除胸膈间因热邪导致的涎液阻塞，缓解胸膈烦闷。治疗中风引起的痰实证，消除消渴病（消瘅）、风邪惊悸及胡言乱语等症状。（婴幼儿惊滞病症用药尤为多见）。治疗舌部疾病及咽喉病症。铅霜是铅借助水银之气相互感应，通过醋的作用提取其精华。道家称之为“神符白雪”。病位在上焦者，适宜用此药进行清镇治疗。（李时珍）
凡是中风、惊悸，没有不是由痰热引起的。胸膈烦闷且多口渴，也是火热炎灼所致。铅霜味甘性寒，能清除热邪、生津液，并治疗呕吐逆气，具有镇惊、去除怯懦的作用。（陈实功）
将铅霜涂抹在木瓜上，木瓜就失去了酸味，这是因为金克木的原理。（王肯堂）
【方剂】化涎散：治疗热痰，通利胸膈，止烦渴。配方：凝水石一两，铅霜、马牙硝、雄黄各一钱（分别单独研磨），枯矾、炙甘草各二钱半，龙脑少许。研为细末，混合均匀。每次服用一钱，用水调服。小儿风热痰涎证，用沙糖水调服半钱。此药大凉，不可多服。
【炮制】法制半夏：消除饮邪，化痰，强壮脾胃，顺气。取大半夏，用汤浸泡清洗七遍，用浓米泔水浸泡一天一夜。每用半夏一两，配白矾一两半，研细，用温水化开浸泡半夏，至水分渗出约两指宽时，频繁搅拌。冬季放在温暖处，浸泡五夜一夜。取出焙干，再用铅霜一钱，温水化开浸泡一天一夜，共七日全部取出。后用浆水慢火煮，不让其沸腾。待浆水极热时取出，焙干，用瓷器收贮。每次服用一至二粒，饭后细细咀嚼，用温姜汤送下。
【方剂】谵妄镇心丸：治疗心风，狂言多惊，昏迷恍惚。配方：牛黄、铅霜、铁粉各七钱半，朱砂水飞，龙齿、天竺黄各研细，龙胆草、远志肉、干地黄各半两，金箔五十片，人参、茯神、犀角屑各一两。研为细末，混合均匀，炼蜜制成小豆大小的丸剂。每次服用七丸，竹叶汤送下。
【方剂】惊风铁粉散：治疗风惊。配方：铁粉、朱砂、铅霜、天竺黄。用竹沥汤调服。每次服用五分。
【方剂】消渴甘露丸：解除壅滞毒邪，退风热，治疗口舌干燥。配方：寒水石二斤，马牙硝三两，铅霜、炙甘草、龙脑各七钱半。研为细末，混合均匀，用糯米饭和丸，大小如弹子。每次取半丸，饭后用新汲水磨化服用。
【方剂】木舌马牙硝丸：配方：马牙硝七钱半，铅霜、元精石、寒水石、麝香、大黄各五钱，枯矾一钱二分，炙甘草二钱半。研为细末，混合均匀，炼蜜制成如小弹子大小的丸剂。每次含服一丸，咽下津液。此证也可用甘露丸治疗。
【方剂】绿云散：治疗舌上生疮。配方：铜绿、铅霜各等分，共同研磨极细。每次取少许，撒在舌上。
【方剂】咽喉龙麝聚圣丹：治疗心脾客热，毒瓦斯攻冲咽喉，导致红肿疼痛，或形成喉痹，或结块硬而不消，经久不愈，或舌根肿胀，满口生疮，饮食难进。配方：南硼砂、川芎各一两，生地黄、犀角屑、羚羊角屑、元参、桔梗、升麻、连翘、琥珀、铅霜各五钱，人参、赤茯苓、马牙硝、脑子、麝香各三钱，朱砂、牛黄各二钱。研为细末，炼蜜制丸，每两药粉作十丸，用金箔五十片包衣。每次服用一丸，用薄荷汤或新汲水化开服用，或细细咀嚼，或含化，让津液咽下均可。
【方剂】祛毒牛黄丸：治疗咽喉肿痛，舌根强硬，满口生疮，涎潮喘急，饮食难进，胸膈不利。配方：牛黄三钱半，人参、琥珀、犀角细末、硼砂、生地、桔梗各半两，雄黄飞研一两，元参、升麻各三钱，蛤粉水飞四两，寒水石二两，朱砂研飞七钱，铅霜、脑子各一钱。研为细末，炼蜜制成如小弹子大小的丸剂，金箔包衣，瓷器收贮。每次服用一丸，用薄荷汤或新汲水化开，饭后每日服用二至三次。含化亦可。
【方剂】黄柏散：治疗咽喉生疮疼痛。配方：黄柏、槟榔、牛蒡子、紫菀、栀子仁、赤茯苓、生甘草各半两，元参、麦冬各一两，升麻、黄芩各三钱。锉碎，每次服用一钱，加水一盏，煎至六分，温服。
【方剂】桃红散：治疗咽疮肿赤紫色，咽痛吞咽受阻。配方：金银箔各十片，铅霜少许，寒水石四两，元精石二两（这两味药捣碎，放入盒子内，烧至通红，取出埋入土中，以去火毒，然后研细），马牙硝、朱砂、炙甘草各一两。研为细末，混合均匀。每次服用一字量，用甘草水调服；或用稀糯米饭制成如豌豆大小的丸剂，含化咽津。
【外治法】喉痹肿痛：铅霜半两，青黛一两，研为末，用醋糊制成芡子大小的丸剂。每次含咽一丸，立效。
【外治法】悬痈肿痛：铅霜一分，生甘草、炙甘草各一分，研为末，用绵包裹含咽。
【外治法】口干牙龈腐烂，口气臭秽出血，不分大人小孩：铅霜、铜绿各二钱，白矾如豆许大，研为末，扫敷患处。
【儿科】小儿惊热（心肺积热，夜间睡眠多惊）：铅霜、牛黄各半分，铁粉一分，研匀。每次服用一字量，用竹沥调服。
【儿科】惊风痫疾，喉闭牙紧：铅霜一字，蟾酥少许，研为末，用乌梅肉蘸药，在牙龈上揩擦。随后吹入通关药，良久牙齿便会张开。
〔论述〕 铅本是天一坎水凝结而成，是五金之祖。这是金在水中，所谓壬金为阳，其气能上交。水银出于丹砂，是离卦中的坎爻，内蕴金精，是坎水之母气。水银的性质又能下交二者，因变化而吐出其精华，则是以至阴精气，感应离中之坎以下行，而坎水母气本源于离，却能感应壬金之阳而与之结合。这样怎么能不治疗上焦心肺的热证呢？即使夹杂肝火，也借助其清镇而降坠。铅霜性极冷，不是久服常用的药物，病好后应立即停用。胃弱脾虚、肠滑者不宜使用。风寒咳嗽多痰者，一并禁忌。（陈实功）
Qingshuang (Lead Frost), also known as Qianbaishuang (Lead White Frost). It is prepared by smelting lead mixed with one-fifteenth part of mercury. The resulting product is formed into slices the size of a coin, perforated in the center to be strung together. Raw vinegar is placed in a clay pot, and the string of lead slices is laid horizontally across the pot, positioned three cun above the vinegar surface. The pot is then covered with another clay vessel and placed in a shaded area. Once frost forms on the lead, it is brushed off, and the process is repeated. (Shizhen)
Its flavor is sweet and sour, and its nature is extremely cold. It eliminates phlegm (specifically wind-phlegm). It removes heat-induced salivary obstruction in the chest and diaphragm, relieving chest oppression and irritability. It treats excess phlegm syndromes caused by stroke, and dissipates xiaodao (wasting-thirst syndrome), wind-strike palpitations, and delirium. (It is particularly frequently used for infantile convulsive stagnation.) It treats tongue diseases and throat disorders. Qingshuang is formed when lead interacts with the qi of mercury, extracting its essence through the action of vinegar. Daoists refer to it as "Divine Talisman Snow." For diseases located in the upper jiao, this herb is suitable for clearing and settling. (Shizhen)
All cases of stroke and palpitations arise from phlegm-heat. Chest oppression accompanied by excessive thirst is caused by the blazing of fire-heat. Qingshuang is sweet and cold; it can clear heat, generate fluids, treat vomiting and reflux, calm fright, and remove timidity. (Chenggong)
Applying Qingshuang to papaya causes it to lose its sour taste, illustrating the principle that Metal overcomes Wood. (Kentang)
**Formula: Huaxian San (Saliva-Transforming Powder)**
Indications: Heat-phlegm, promoting free flow in the chest and diaphragm, stopping irritability and thirst.
Ingredients: Ninghuishi (Calcitum) 1 liang; Qingshuang (Lead Frost), Mayaxiao (Niter), Xionghuang (Realgar) each 1 qian (ground separately); Kufan (Alumen Ustam), Zhigancao (Honey-fried Licorice Root) each 2.5 qian; Longnao (Borneolum Syntheticum) a small amount.
Preparation: Grind into a fine powder and mix evenly.
Dosage: Take 1 qian, mixed with water. For pediatric wind-heat phlegm-saliva, take 0.5 qian mixed with sugar water. This medicine is very cold and should not be taken in large amounts.
**Processing: Fazhi Banxia (Processed Pinellia Tuber)**
Actions: Resolves fluid retention, transforms phlegm, strengthens the spleen, and regulates qi.
Method: Soak and wash large Banxia (Pinelliae Rhizoma) seven times with decoction. Soak in thick rice washing water for one day and night. For every 1 liang of Banxia, use 1.5 liang of Baifan (Alumen). Grind the alum finely, dissolve in warm water, and soak the Banxia until moisture exudes about two finger-widths high. Stir frequently. In winter, keep in a warm place for five days and nights. Remove and dry. Then, soak in 1 qian of Qingshuang dissolved in warm water for one day and night, repeating this cycle for seven days total. Finally, boil slowly in fermented grain water without letting it boil vigorously. When the water is extremely hot, remove and dry. Store in porcelain.
Dosage: Chew 1-2 pills thoroughly after meals, swallowing with warm ginger soup.
**Formula: Zhenxin Wan (Heart-Calming Pill)**
Indications: Xin Feng (Wind affecting the Heart), manic speech, frequent fright, confusion, and trance.
Ingredients: Niuhuang (Calculus Bovis), Qingshuang (Lead Frost), Tiefen (Plumbum Metallicum) each 7.5 qian; Zhusha (Cinnabaris) washed with water; Longchi (Os Draconis), Tianzhuhuang (Spatholobi Caulis) ground finely; Longdancao (Gentianae Radix), Yuanzhi (Polygalae Radix), Shengdihuang (Rehmanniae Radix) each 0.5 liang; Jinbo (Folium Aureum) 50 pieces; Renshen (Ginseng Radix et Rhizoma), Fushen (Poria cum Radix), Xijiaoxie (Rhinocerotis Cornu) each 1 liang.
Preparation: Grind into fine powder, mix evenly, and bind with refined honey to form pills the size of mung beans.
Dosage: Take 7 pills, washed down with Zhu Ye Tang (Bamboo Leaf Decoction).
**Formula: Jingfeng Tiefen San (Convulsion Iron Powder Powder)**
Indications: Wind-strike palpitations.
Ingredients: Tiefen (Plumbum Metallicum), Zhusha (Cinnabaris), Qingshuang (Lead Frost), Tianzhuhuang (Spatholobi Caulis).
Dosage: Mix with Zhuli Tang (Bamboo Juice Decoction). Take 0.5 fen per dose.
**Formula: Xiaodao Ganlu Wan (Wasting-Thirst Sweet Dew Pill)**
Actions: Relieves congestion and toxicity, clears wind-heat, treats dryness of mouth and tongue.
Ingredients: Hanshuishi (Aqua Calcis) 2 jin; Mayaxiao (Niter) 3 liang; Qingshuang (Lead Frost), Zhigancao (Honey-fried Licorice Root), Longnao (Borneolum Syntheticum) each 7.5 qian.
Preparation: Grind into fine powder, mix evenly, and bind with glutinous rice paste to form pills the size of a bullet.
Dosage: Take half a pill after meals, ground in fresh well water and drunk.
**Formula: Muses Mayaxiao Wan (Tongue-Stiffness Niter Pill)**
Ingredients: Mayaxiao (Niter) 7.5 qian; Qingshuang (Lead Frost), Yuanjingshi (Lapis Aquae), Hanshuishi (Aqua Calcis), Shexiang (Moschus), Dahuang (Rhei Radix et Rhizoma) each 5 qian; Kufan (Alumen Ustam) 1.2 qian; Zhigancao (Honey-fried Licorice Root) 2.5 qian.
Preparation: Grind into fine powder, mix evenly, and bind with refined honey to form pills the size of small bullets.
Dosage: Hold one pill in the mouth and swallow saliva. This condition can also be treated with Ganlu Wan.
**Formula: Lvyun San (Green Cloud Powder)**
Indications: Sores on the tongue.
Ingredients: Tonglv (Chalcitis), Qingshuang (Lead Frost) in equal parts.
Preparation: Grind together to an extremely fine powder.
Usage: Apply a small amount directly onto the tongue.
**Formula: Yanhou Longshe Jusheng Dan (Throat Dragon-Musk Gathering Sage Pill)**
Indications: Guest-heat in Heart and Spleen, toxic vapors attacking the throat causing redness, swelling, and pain; or forming Hou Bi (throat obstruction); or hard nodules that do not resolve; chronic non-healing sores; swollen tongue root; sores all over the mouth making eating difficult.
Ingredients: Nanpenga (Borax), Chuanxiong (Ligustici Chuanxiong Rhizoma) each 1 liang; Shengdihuang (Rehmanniae Radix), Xijiaoxie (Rhinocerotis Cornu), Lingyangjiaoxie (Capris Cornu), Xuanshen (Scrophulariae Radix), Jiegeng (Platycodonis Radix), Shengma (Cimicifugae Rhizoma), Lianqiao (Forsythiae Fructus), Hupo (Electrum), Qingshuang (Lead Frost) each 5 qian; Renshen (Ginseng Radix et Rhizoma), Chifuling (Poria cum Parergon), Mayaxiao (Niter), Naohzi (Camphora), Shexiang (Moschus) each 3 qian; Zhusha (Cinnabaris), Niuhuang (Calculus Bovis) each 2 qian.
Preparation: Grind into fine powder, bind with refined honey to make pills. Each 1 liang of powder makes 10 pills, coated with 50 pieces of Jinbo (Folium Aureum).
Dosage: Take one pill. Dissolve in Bohe Tang (Mint Decoction) or fresh well water, chew thoroughly, or hold in the mouth allowing saliva to swallow. All methods are effective.
**Formula: Qudu Niuhuang Wan (Toxin-Expelling Calves' Gallstone Pill)**
Indications: Throat swelling and pain, stiff tongue root, sores all over the mouth, flooding saliva, wheezing, difficulty eating, chest oppression.
Ingredients: Niuhuang (Calculus Bovis) 3.5 qian; Renshen (Ginseng Radix et Rhizoma), Hupo (Electrum), Xijiaoxie (Rhinocerotis Cornu) fine powder, Pengsha (Borax), Shengdihuang (Rehmanniae Radix), Jiegeng (Platycodonis Radix) each 0.5 liang; Xionghuang (Realgar) washed 1 liang; Xuanshen (Scrophulariae Radix), Shengma (Cimicifugae Rhizoma) each 3 qian; Gafen (Armeniaca Semen) washed with water 4 liang; Hanshuishi (Aqua Calcis) 2 liang; Zhusha (Cinnabaris) washed 7 qian; Qingshuang (Lead Frost), Naohzi (Camphora) each 1 qian.
Preparation: Grind into fine powder, bind with refined honey to form pills the size of small bullets, coated with gold foil, stored in porcelain.
Dosage: Take one pill, dissolved in Mint Decoction or fresh well water. Take 2-3 doses daily after meals. Holding in the mouth is also acceptable.
**Formula: Huangbai San (Phellodendron Powder)**
Indications: Sores and pain in the throat.
Ingredients: Huangbai (Phellodendri Cortex), Binglang (Arecae Semen), Niubangzi (Arctii Fructus), Ziwan (Astagti Radix), Zhiren (Gardeniae Fructus), Chifuling (Poria cum Parergon), Shenggancao (Raw Licorice Root) each 0.5 liang; Xuanshen (Scrophulariae Radix), Maidong (Ophiopogonis Radix) each 1 liang; Shengma (Cimicifugae Rhizoma), Huangqin (Scutellariae Radix) each 3 qian.
Preparation: Cut into pieces.
Dosage: Take 1 qian, add 1 cup of water, decoct to 0.6 cup, and drink warm.
**Formula: Taohong San (Peach Red Powder)**
Indications: Throat sores with red, purple, and swollen appearance; sore throat obstructing swallowing.
Ingredients: Jinfubo (Gold Foil), Yinbufu (Silver Foil) each 10 pieces; Qingshuang (Lead Frost) a small amount; Hanshuishi (Aqua Calcis) 4 liang; Yuanjingshi (Lapis Aquae) 2 liang. (These two minerals are crushed, placed in a box, heated until red-hot, buried in soil to remove fire toxicity, then ground fine.) Mayaxiao (Niter), Zhusha (Cinnabaris), Zhigancao (Honey-fried Licorice Root) each 1 liang.
Preparation: Grind into fine powder, mix evenly.
Dosage: Take one "yi zi" measure, mixed with Licorice water. Alternatively, form into pills the size of peas using thin glutinous rice paste, hold in mouth to dissolve and swallow saliva.
**External Treatment: Hou Bi Zhongtong (Throat Obstruction Swelling and Pain)**
Ingredients: Qingshuang (Lead Frost) 0.5 liang, Qingdai (Indigo Naturalis) 1 liang.
Preparation: Grind into powder, bind with vinegar paste to form pills the size of Euryale seeds.
Usage: Hold one pill in the mouth and swallow; effect is immediate.
**External Treatment: Xuan Yong Zhongtong (Suspended Abscess Swelling and Pain)**
Ingredients: Qingshuang (Lead Frost) 1 fen, Shenggancao (Raw Licorice Root), Zhigancao (Honey-fried Licorice Root) each 1 fen.
Preparation: Grind into powder, wrap in cotton, hold in mouth and swallow.
**External Treatment: Kougan Yinlan (Dry Mouth and Gingival Ulceration)**
Symptoms: Bad breath, bleeding gums. Suitable for adults and children.
Ingredients: Qingshuang (Lead Frost), Tonglv (Chalcitis) each 2 qian; Baifan (Alumen) a bean-sized amount.
Preparation: Grind into powder, apply/sweep onto the affected area.
**Pediatrics: Xiao'er Jingre (Infantile Fever due to Convulsion/Heat)**
Pathogenesis: Accumulated heat in Heart and Lung, frequent fright during sleep.
Ingredients: Qingshuang (Lead Frost), Niuhuang (Calculus Bovis) each 0.5 fen; Tiefen (Plumbum Metallicum) 1 fen.
Preparation: Grind evenly.
Dosage: Take one "yi zi" measure, mixed with Zhuli (Bamboo Juice).
**Pediatrics: Jingfeng Xianji (Convulsions and Epilepsy)**
Symptoms: Throat closure, clenched teeth.
Ingredients: Qingshuang (Lead Frost) one "yi zi", Chan Su (Toad Venom) a small amount.
Preparation: Grind into powder.
Usage: Dip in Sour Plum Meat (Wumei Rou), rub on the gums. Then blow Tongguan Yao (Pass-the-Passage Medicine) into the mouth. After a while, the jaw will open.
[Discussion] Lead is condensed from Tianyi Kan Water and is the ancestor of the five metals. This represents Metal within Water. Ren Metal is Yang, and its Qi can ascend. Mercury originates from Cinnabar; it is the Kan trigram within the Li trigram, containing the essence of Metal internally, serving as the mother Qi of Kan Water. Its nature allows it to descend and interact with both. Through transformation, it expels its essence. Thus, the extreme Yin Jing-Qi interacts with the Kan within Li to descend, while the mother Qi of Kan Water, originating from Li, can interact with the Yang of Ren Metal and combine with it. How could it fail to treat heat in the Upper Jiao (Heart and Lung)? Even if accompanied by Liver Fire, it relies on its clearing and settling properties to descend. Its nature is extremely cold; it is not a substance for long-term or routine use. Discontinue once the disease resolves. It is unsuitable for those with weak Stomach, deficient Spleen, or loose bowels. It is contraindicated for those with Wind-Cold cough with excessive phlegm. (Chenggong)