味甘，温，无毒。酒渍服，与殷孽同。一名同石、一名乳床、一名逆石。
陶云孔公孽，即乳床，非也。二孽在上，床、花在下，性体虽同，上下有别。钟乳水滴
下凝积，生如笋状，渐长，
久与上乳相接为柱也。出钟乳堂中，采无时。（新附）
味辛，平，无毒。主身痒，火疮，痈伤，白秃，疥瘙，死肌。浸淫在皮肤中。煮
炼服之，起阴气，可化为丹。一名石珠，一名青珠。生蜀郡平泽，采无时。
杀锡毒，得水银良，畏乌鸡骨。此即《蜀都赋》所称青珠、黄环者也。黄环乃是草，苟
取名类，而种族为乖。琅
亦是昆山上树名，又《九真经》中太丹名也。此石今亦无用，唯以疗手足逆胪目。化丹之事，
未的见其术。
〔谨案〕琅 ，
乃有数种色，是琉璃之类，火齐宝也。且琅 五色，其以青者入药为胜，今出 州以西乌白
蛮中及于阗国也。
味辛、甘，大热、生温、熟寒，有毒。主寒热，鼠 ，蚀疮，死肌，风痹，腹中坚癖
邪气，除热。明目，下气，除隔中热，止消渴，益肝气，破积聚，痼冷腹痛，去鼻中息肉。
久服令人筋挛。火炼百日，服一刀圭。不炼服，则杀人及百兽。一名青分石，一名立制石，
一名固羊石，一名白 石，一名大白石，一名泽乳，一名食盐，生汉中山谷及少室，采无时
。
得火良，棘针为之使，恶毒公、 矢、虎掌、细辛，畏水也。今蜀汉亦有，而好者出南
康南野溪，及彭城界中、洛
阳城南堑，常取少室。生 石内水中，令水不冰，如此则生亦大热。今以黄土泥苞，炭火烧
之，一日一夕则解碎，可用，
疗冷结为良。丹方及黄白术皆多用此，善能柔金。又湘东新宁县及零陵皆有白 石。
〔谨案〕
此石能拒火，久烧但解散，
不可夺其坚。今市人乃取洁白细理石当之，烧即为灰，非也。此药攻击积聚痼冷之病为良，
若以余物代之，疗病无效，
正为此也。今汉川武当西辽 名 石谷，此即是其真出处。少室亦有，粒
Taste is sweet, nature is warm, non-toxic. Soaked in wine and taken orally, its effect is the same as Yin Nie (a type of stalactite). Also known as Tong Shi (Same Stone), Ru Chuang (Milk Bed), and Ni Shi (Reverse Stone).
Tao Hongjing stated that Kong Gong Nie is Ru Chuang, which is incorrect. Yin Nie and Kong Gong Nie are located above, while Ru Chuang and Zhong Ru Hua (Stalactite Flower) are located below. Although their properties and physical forms are similar, their positions differ. Stalactite water drips down and condenses, growing like bamboo shoots; over time, it connects with the stalactites above to form pillars. It is found in Zhong Ru Tang (Stalactite Halls), and can be harvested at any time. (Newly added)
Taste is pungent, nature is neutral, non-toxic. It treats body itching, fire sores, carbuncles, white tinea capitis (scalp ringworm), scabies, necrotic tissue, and lesions oozing within the skin. After boiling and refining, it can be taken orally to raise Yin Qi and can be transformed into elixirs. Also known as Shi Zhu (Stone Pearl) and Qing Zhu (Green Pearl). It grows in Ping Ze, Shu Commandery, and can be harvested at any time.
It eliminates tin toxicity; combined with Mercury Bichloride (Shui Yin), it is effective. It is contraindicated with Black Chicken Bone. This refers to the Qing Zhu and Huang Huan mentioned in "Shu Du Fu". Huang Huan is actually a plant; if classified together merely due to name similarity, their botanical families are vastly different. Lang Gan (Chrysoprase/Agate) is also the name of a tree on Mount Kunlun and the name of Tai Dan in the "Jiu Zhen Jing". This stone currently has no other uses, except for treating limb edema/deformity (Ni Lu) and eye diseases. Regarding the process of alchemical transformation, there is no confirmed method observed.
[Verification] Lang Gan comes in several colors and belongs to the category of glaze-like treasures, specifically Huo Qi Bao (Fire-Resistant Gem). Among the five colors of Lang Gan, the green variety is superior for medicinal use. It is currently produced in the Wubai Man regions west of Zhou Prefecture and in the Kingdom of Khotan.
Taste is pungent and sweet; nature is extremely hot when raw, warm when fresh, and cold when processed/cooked; toxic. It treats alternating chills and fever, scrofula (lymphatic tuberculosis), corrosive ulcers, necrotic tissue, wind-bi syndrome, hard abdominal masses, pathogenic factors, clears heat, brightens the eyes, directs Qi downward, clears heat from the chest and diaphragm, stops thirst (Xiao Ke), tonifies Liver Qi, breaks up accumulations, treats chronic cold pain, and removes nasal polyps. Long-term use causes tendon contraction. Processed by fire for one hundred days; take one Dao Gui (a small unit of measurement) per dose. If taken unprocessed, it will kill humans and animals. Also known as Qing Fen Shi (Green Split Stone), Li Zhi Shi (Stand Control Stone), Gu Yang Shi (Solidify Sheep Stone), Bai Shi (White Stone), Da Bai Shi (Great White Stone), Ze Ru (Marsh Milk), and Yan Shi (Salt Stone). It grows in valleys in Hanzhong and Mount Shaoshi, and can be harvested at any time.
It performs well with fire; Spine Needle (Ji Zhen) serves as its guiding herb. It is incompatible with Du Gong, Arrowhead, Hu Zhang, and Xi Xin; it fears water. It is also found in Shu and Han regions, but high-quality specimens come from Nan Ye Stream in southern Nankang, within Pengcheng jurisdiction, and along the moat south of Luoyang City, often sourced from Mount Shaoshi. It grows in water within rocks, keeping the water from freezing; thus, even in its raw state, it is extremely hot. Currently, it is wrapped in yellow clay mud and fired in charcoal for a day and night until it crumbles, making it usable. It is excellent for treating cold stagnation. It is widely used in alchemical formulas and Huang Bai Shu (Yellow and White Alchemy texts) because it can soften metals. Additionally, Bai Shi is found in Xinning County, Xiangdong, and Lingling.
[Verification] This stone resists fire; prolonged burning only causes it to disintegrate without losing its hardness. Market vendors sometimes substitute it with fine-grained white marble, which turns to ash when burned; this is incorrect. This drug is effective against accumulations and chronic cold conditions. Substitutes fail to treat these diseases effectively for this reason. The place named Shi Ying Valley west of Wudang in Hanchuan is the true origin. Mount Shaoshi also produces it, in granular form.