味辛甘，寒、大寒，无毒。主身热，利胃，解烦，益精明目，破积聚，去三虫，除营
中去来大热、结热，解烦毒，止消渴及中风痿痹。滑石为之使。恶∶麻黄。生∶汉中山谷及
庐山。如石膏顺理而细。
味咸，温，无毒。主除风冷邪气湿痹，益精气，妇人痼冷漏下，心腹积聚冷气，
解肌。其色青白，龟背者良。出∶解县。盐精∶味更咸苦，青黑色，大者三、二寸
铧嘴，三月、四月采。亦主除风冷。无毒。又名泥精，盖玄精之类也。及治伤寒。
味甘，平，无毒。主宿血，去目中翳，鼻衄，末吹鼻中。日华子云∶镇心，止惊，
目。《海药》∶按《晋列传》云∶石崇金谷园珊瑚树，交加苑生蕊。味甘，平，无毒
血、风痫等疾。按其主治与金相似也。《唐本》注∶似玉红润，中有孔或无孔。生
波斯国。
无毒。主难产，小儿痫。产妇临产时手持之，亦煮汁服一盏。此马勒口铁也，性平。
华子云∶右铤作医工针也。
味辛，微温。主妇人崩中，吐血，止咳逆，止血，消痈肿、毒瓦斯。《药性论》云∶
亦可。咸，无毒。日华子云∶热，微毒。治鼻洪，肠风，带下，血崩，泄精，尿血，催
胞及小儿夜啼。一云∶治心痛及中风心烦。陶隐居云∶此灶中对釜月下黄土也。
[Lishi]
Taste: Acrid, sweet. Nature: Cold to Great Cold. Toxicity: Non-toxic. Actions: Mainly treats body heat, promotes stomach function, relieves irritability, benefits essence and brightens the eyes, breaks up accumulations, expels three types of parasites, removes severe alternating heat and stagnant heat from the Ying (Nutritive) level, resolves toxic irritability, stops thirst-quenching disease (Xiaoke), and treats flaccidity and bi-syndrome caused by Wind-stroke. Guide herb: Huashi (Talcum). Aversion: Mahuang (Ephedrae Herba). Origin: Produced in Zhongshan Valley, Hanzhong, and Mount Lu. It resembles Shigao (Gypsum Fibrosum) with smooth texture and fine grain.
[Xuanjingshi / Nijing]
Taste: Salty. Nature: Warm. Toxicity: Non-toxic. Actions: Mainly expels Wind-cold pathogenic factors and Damp-bi, benefits essence and Qi, treats persistent cold uterus with leukorrhea in women, cold qi accumulation in the heart and abdomen, and releases the muscle layer. Quality indicator: Those that are greenish-white and have a tortoise-shell back shape are superior. Origin: Jie County. Yanjing: Taste is more salty and bitter, color is greenish-black, large pieces are about 2-3 cun long shaped like a plowshare tip, harvested in March and April. Also mainly expels Wind-cold. Non-toxic. Also known as Nijing, belonging to the category of Xuanjing. Also used to treat Shanghan (Cold Damage).
[Shanhu]
Taste: Sweet. Nature: Neutral. Toxicity: Non-toxic. Actions: Mainly treats retained blood, removes nebula in the eyes, stops epistaxis, and when powdered, is blown into the nose. Ri Hua Zi states: Calms the Heart and spirit, stops惊 (fright), and brightens the eyes. Haiyao Bencao records: According to the "Biographies of Jin", Shi Chong's Coral Tree in the Golden Valley Garden grew corals in Jiaojia Garden. Taste: Sweet. Nature: Neutral. Toxicity: Non-toxic. Treats blood diseases, Wind-epilepsy, etc. Its therapeutic actions are similar to Gold. Tangben Zhu notes: Resembles jade, reddish and lustrous, with or without holes. Origin: Persia.
[Shuiyin]
Taste: Acrid. Nature: Cold. Toxicity: Non-toxic. Actions: Mainly repels evil qi, and is used for hot compresses to treat red and rotting eyes. Origin: Western Regions.
[Tie]
Toxicity: Non-toxic. Actions: Mainly treats difficult labor and pediatric epilepsy. The parturient holds it during delivery, or it can be boiled and one cup of the decoction taken. This is iron from a horse bit, nature is neutral. Ri Hua Zi states: The right ingot can serve as needles for medical practitioners.
[Daihezshi]
Taste: Acrid. Nature: Slightly Warm. Actions: Mainly treats metrorrhagia and uterine bleeding, hematemesis, counterflow cough, stops bleeding, and dissipates carbuncles and toxic vapors. Yaoxing Lun states: Can also be used [for these conditions]. Salty taste, non-toxic. Ri Hua Zi states: Nature is Hot, slightly toxic. Treats epistaxis, intestinal wind, leukorrhea, metrorrhagia, seminal emission, hematuria, induces labor, and pediatric night crying. Another view: Treats heart pain and irritability due to Wind-stroke. Tao Hongjing states: This is yellow earth formed under the pot in the center of the stove.