产处不一。桂海志。宜融山洞石穴中。钟乳甚多。仰视石脉涌起处。即有乳床。白
如玉雪。乳床下垂如倒生山峰。峰端渐锐。且长若冰柱。柱端轻薄。中空如鹅翎。乳水滴沥
不已。且滴且凝。此乳之最精者。以竹管仰承取之。而炼冶家又以鹅管之端。尤轻明如云母
爪甲者为胜。光润而薄如罗纹鸟翮蝉翼。一切皆成白色者。可服。非若此者。慎弗服之。杀
人甚于鸩毒。（孙真人） 如蝉翼者上。爪甲者次。鹅管者下。（萧炳） 一法。取韶州钟乳。
无问浓薄。但令颜色明净光泽者。即堪入炼。惟黄赤二色不任用。今人但以鹅管中空者为最
。故一名鹅管石。（李补阙）
味甘辛。气温。其性得火则有大毒。主咳逆上气。益元气。安五脏。补虚损。治脚弱疼
冷。下焦伤竭。强阴。疗泄精。久服令人有子。除寒嗽并消渴引饮。同诸药。治虚劳肺病。
元气虚。咳嗽血。及肠胃虚冷滞下。真元虚滑泄精。乳乃石之灵液。具山体之全。故功力勇
悍乃尔。须真病命门火衰者宜之。否则当审。（子由濒湖） 凡服乳三日。即三日补之。服
十日。即十日补之。欲饱食。以牛羊獐鹿等骨煎汁。任意作羹啜之。勿食仓米臭肉。及犯房
事。一月后精气满盛。百脉流遍。身体觉热。绕脐肉起。此为得力。可稍近房事。不可频数。
令药气顿竭。弥更害人。戒之慎之。（濒湖） 得牛黄白蜡象牙末真珠乳香没药龟板桦皮灰
（俱存性研细）枯矾蛀竹屑红铅。治广疮结毒。烂坏鼻梁。及阴蚀阳物。有神。风虚劳损。
腰脚无力。钟乳煎。用钟乳粉炼成者三两。以夹练袋盛之。牛乳一大升。煎减三之一。去袋
饮乳。分二服。日一作。不吐不利。虚冷人微溏无苦。一袋可煮三十度。即力尽。别作袋。
每煎讫。须濯净。令通气。其渣和面喂鸡。生子食之。（崔尚书方）一切劳嗽。胸膈痞满。
焚香透膈散。用鹅管石雄黄佛耳草款冬花等分。为末。每用一钱。安香炉上焚之。以筒吸烟
入喉中。日二次。肺虚喘急。连绵不息。生钟乳粉光明者五钱。蜡三两化和。饭甑内蒸熟。
研丸梧子大。每温水下一丸。按生乳必肺虚极者。乃可一投。未可概用。
〔论〕 石禀精悍之气以结。质最坚重。是固居其浊而类为阴也。至精悍之气透化为乳。
则居其清者。斯名之为阳。而大能益气矣。然则钟乳不为阴中之阳乎。肺虚极者。用补肺中
阳气。更大壮下焦元气。非真病于阳虚者。不可轻服。即服之中病。且当终身忌术。缘术能
动钟乳也。（如火微。必借风鼓之而后发火。盛则一鼓之即不可向迩。义固如此。）种树书云。
凡果树作穴。纳钟乳末少许。固密。则子多而味美。纳少许于老树根皮间。则树复茂。移此
于人身。其为元气之助。功岂鲜哉。然而石药气悍。易伤阴气。服久则营卫不从。变生他证
。若阴虚人误投。尤为抱薪救火也。
物类相感志服钟乳。忌参术。犯者多死。凡人阳明气衰。用此合诸药以救衰疾。平则止。
夫何不可。昧者因其阳气暴充。藉耽淫 。致精气暗损。石气独存。孤阳愈炽。久之营卫不
从。发为淋渴。变为痈疽。是果乳石之过耶。抑人之自取耶。先哲致戒者。多不能备录。（濒
湖）
〔修治〕 李补阙服乳法。取韶州钟乳。无问浓薄。但颜色明净光泽者。（黄赤二色不
用）置金银器中。大铛着水。沉器煮之。令如鱼眼沸。水减即添。乳少三日夜。乳多七日夜。
候干。色变黄白。即熟。如疑生。煮满十日更佳。取出去水。更以清水煮半日。其水色清不
变。即止。乳无毒矣。入瓷钵中。玉槌着水研之。觉干涩。即添水。常令如稀米泔状。研至
四五日。揩之光腻如书中白鱼。便以水洗之。不随水落者即熟。落者更研。乃澄取。曝干。
每用一钱半。温酒调。空腹服。兼和丸散用。其煮乳黄浊水。切弗服。服之损咽伤肺。令人
头痛。或下利不止。其有犯者。但食猪肉解之。卢子由云。经言水势劣火。结为高山乳质。
全类似水。而勇悍独专。宁非火胜水劣乎。修治用水煮。仍交水火以济之。水胜于火所以少
平勇悍也。今世火 。反助勇悍。故多石毒燃烧之患。
Origins vary. *Guanghai Zhi* (Records of the Guihai Region) states that in the stone caves of Rongzhou, Yizhou, there is a great abundance of Shanzhongru (Calcitum). Looking up at the places where the stone veins surge upward, one finds "milk beds" (accumulations of calcite), white as jade and snow. These beds hang down like inverted peaks; the tips gradually sharpen and elongate like icicles. The ends are thin and light, hollow like goose feathers. Milk droplets fall continuously, condensing as they drip. This is the most refined form of Shanzhongru. It is collected by holding bamboo tubes upside down to catch it. Smelting experts consider the ends of the "goose quill" (hollow tube-like formations) that are particularly light, clear, resembling mica or fingernails, to be superior. Those that are lustrous, thin like bird feathers or cicada wings, and entirely white are suitable for consumption. Those not like this should strictly be avoided, as they can kill people more swiftly than poison (Sun Simiao). Those resembling cicada wings are first-rate; those resembling fingernails are second-rate; those resembling goose quills are inferior (Xiao Bing). Another method: Obtain Shanzhongru from Shaozhou, regardless of thickness, provided the color is bright, clean, and lustrous, making it suitable for processing. Only yellow and red colors are unusable. Currently, people regard only the hollow goose-quill type as best, hence its alternative name, Eguan Shi (Goose Quill Stone) (Li Buchue).
The taste is sweet and acrid; the nature is warm. When exposed to fire, it becomes highly toxic. It primarily treats cough with rebellious Qi (coughing with shortness of breath), tonifies Yuan Qi (original Qi), stabilizes the five Zang organs, supplements deficiency and damage, treats weakness and cold pain in the legs, exhaustion of the lower Jiao (lower burner), strengthens Yin (essence/fluids), treats seminal emission, and long-term use promotes fertility. It eliminates cold-type cough and excessive thirst associated with Xiao Ke (wasting-thirst syndrome). Combined with other herbs, it treats consumptive lung disease due to deficiency-labor, coughing blood due to deficient Yuan Qi, and dysentery with sliding emission due to deficiency-cold of the intestines and stomach, as well as seminal sliding due to deficiency of True Yuan. Shanzhongru is the spiritual fluid of stones, possessing the complete qualities of the mountain body; thus, its efficacy is vigorous and fierce. It is suitable only for patients with genuine Mingmen Fire Deficiency (deficiency of fire at the gate of vitality). Otherwise, careful examination is required (Zi You, Ben Cao Gang Mu). Whenever Shanzhongru is taken for three days, tonification must continue for three days; if taken for ten days, tonification must continue for ten days. To eat sufficiently, decoct bones of cattle, sheep, cheetahs, or deer into juice and drink them freely as soup. Do not consume grain rice or spoiled meat, and abstain from sexual intercourse. After one month, when Jing-Qi (essence and Qi) is full and abundant, flowing through all meridians, and the body feels warm with muscle bulging around the navel, this indicates the medicine is effective. Sexual activity may then be resumed slightly, but not frequently, to prevent the sudden depletion of medicinal Qi, which would cause further harm. Guard against this carefully (Ben Cao Gang Mu).
Combined with Niuhuang (Calculus Bovis), Baicha (White Beeswax), Xiangya Mo (Powdered Ivory), Zhenzhu (Pearl), Ruxiang (Olibanum), Moyao (Myrrha), Guiban (Carapax et Plastrum Testudinis - preserved character, finely ground), Kufan (Alumen Exsiccatum), Zhu Zhuxie (Bamboo borings), and Hongqian (Red Lead), it treats Guang Chuang Jie Du (chancre toxins), necrotic nasal bridges, and genital erosion, showing miraculous effects. It treats Wind-Deficiency Consumptive Damage and weakness in the waist and legs. **Shanzhongru Jian Decoction**: Use three liang of processed Shanzhongru powder, placed in a silk bag. Decoct in one sheng of cow's milk until reduced by one-third. Remove the bag and drink the milk, divided into two doses, once daily. Vomiting or diarrhea should not occur. Slight loose stools in deficiency-cold constitutions are acceptable. One bag can be boiled thirty times until potency is exhausted; replace with a new bag. After each boiling, wash the bag thoroughly to allow air circulation. Feed the residue mixed with flour to chickens; their eggs are beneficial for patients (Official Cui’s Formula). **Fenxiang Tuoge San** (Incense-Burning Chest-Penetrating Powder): Treats all types of consumptive cough and chest/epigastric stuffiness. Mix equal parts of Eguan Shi (Goose Quill Stone), Xionghuang (Realgar), Foer Cao (Asteriscus Herba), and Kuandonghua (Farfarae Flos) into powder. Use one qian per dose, burn on an incense burner, and inhale the smoke through a tube into the throat twice daily. For Lung-Deficiency wheezing urgency that persists continuously: Use five qian of bright raw Shanzhongru powder and three liang of wax, melt together, steam in a rice steamer until cooked, grind into pills the size of wu zi (wuzeia seeds). Take one pill with warm water. Note: Raw Shanzhongru should only be administered to patients with extreme Lung Deficiency; it should not be used indiscriminately.
[Discussion] Stones form by inheriting vigorous and fierce Qi; their texture is the hardest and heaviest, belonging to turbid Yin. When the most refined and fierce Qi transforms into Shanzhongru, it occupies the clear aspect, thus being named Yang, and greatly benefits Qi. Is Shanzhongru not Yang within Yin? For patients with extreme Lung Deficiency, it tonifies Yang Qi in the Lungs and strongly fortifies Yuan Qi in the Lower Jiao. It should not be lightly administered unless there is genuine Yang Deficiency. Even if it cures the disease, Su (Atractylodis Rhizoma) should be avoided for life because Su can disturb Shanzhongru. (Just as a weak fire needs wind to ignite, while a strong fire becomes dangerous if fanned excessively.) *Zhongshu Shu* (Book of Tree Planting) states: When digging holes for fruit trees, adding a small amount of Shanzhongru powder and sealing it tightly results in more fruit with better flavor. Adding a little between the roots and bark of old trees makes them flourish again. Applying this to the human body, its assistance to Yuan Qi is significant. However, mineral drugs have fierce Qi that easily damages Yin Qi. Long-term use leads to disharmony of Ying and Wei (Nutritive and Defensive Qi) and generation of other syndromes. If mistakenly given to Yin-Deficient individuals, it is like adding firewood to a fire.
*Wulei Xianggan Zhi* (Records of Mutual Induction among Material Classes) states: When taking Shanzhongru, avoid Shen (Ginseng Radix) and Su (Atractylodis Rhizoma); violators often die. For ordinary people with declining Yangming Qi, using this combined with other herbs to rescue decline is acceptable, stopping when equilibrium is restored. What is wrong with this? Ignorant people, benefiting from the sudden surge of Yang Qi, indulge in lust, causing hidden damage to Jing-Qi. The mineral Qi remains alone, causing solitary Yang to blaze fiercely. Over time, Ying and Wei become disharmonious, leading to Lin (dysuria) and Xiao Ke (wasting-thirst), transforming into abscesses and sores. Is this the fault of the mineral drug, or self-inflicted? The warnings of sages cannot be fully recorded (Ben Cao Gang Mu).
[Processing] Li Buchue’s method for taking Shanzhongru: Obtain Shanzhongru from Shaozhou, regardless of thickness, selecting only those with bright, clean, and lustrous colors (avoid yellow and red). Place in gold or silver vessels. Submerge these vessels in a large pot of water and boil until the water bubbles like fish eyes. Add water as it decreases. Boil for three to seven days if the quantity is small, or seven to nine days if large. Wait until dry and the color turns yellowish-white, indicating it is ripe. If unsure if it is unripe, boil for ten days. Remove and drain. Boil again in clear water for half a day; if the water remains clear and unchanged, stop. The Shanzhongru is now non-toxic. Place in a porcelain mortar and grind with a jade pestle dipped in water. Add water when it feels dry, maintaining a consistency like thin rice wash. Grind for four to five days until it feels smooth and glossy like white fish scales in books. Wash with water; particles that do not fall off with the water are ripe, while those that fall must be ground further. Clarify and take, then dry in the sun. Take one qian and half, mixed with warm wine, on an empty stomach. It can also be used in pills and powders. The yellow, turbid water from boiling Shanzhongru must not be consumed, as it damages the throat and lungs, causes headache, or persistent diarrhea. If ingested accidentally, eating pork resolves the toxicity. Lu Ziyou says: Classics state that weak water overcoming fire forms high mountains and Shanzhongru texture. Although similar to water, it is uniquely vigorous and fierce, indicating Fire overcomes Water. Processing involves boiling with water, balancing Fire and Water. Since Water surpasses Fire, the fierceness is somewhat pacified. Modern methods using fire instead exacerbate this fierceness, leading to many cases of mineral toxicity and burning sensations.