味酸，寒，无毒。主益气，治鼽鼻，止泄痢。生山之阴穴中，色青白。
此即用画绿色者，亦出空青中，相带挟。今画工呼为碧青，而呼空青作绿青，正反矣。
（
铁落
味辛、甘，平，无毒。主治风热，恶疮，疡疽疮痂，疥气在皮肤中。除胸膈中热气余
，食不下，心烦，去黑子。一名铁液，可以染皂。生牧羊平泽及 城，或析城，采无时。（
《新修》五七页，《大观》卷四，《政和》一一五页）
铁
主治坚肌耐痛。（《新修》五八页，《大观》卷四，《政和》一一五页）
微寒。主治下部及脱肛。（《新修》五八页，《大观》卷四，《政和》一一五页）
味甘，平，无毒。主治金疮，烦满热中，胸膈中气塞，食不化。一名跳铁。（《新修
》五八页，《大观》卷四，《政和》一一五页）
铁精
平，微温。主明目，化铜。治惊悸，定心气，小儿风痫，除颓，脱肛。
铁落，是染皂铁浆。生铁，是不被 、枪、釜之类。钢铁，是杂炼生镰，作刀、 者。
铁
四，《政和》一一四页）
味辛，微寒。主治咳逆，胃反，惊痫，癫疾，除热，下气。止小便利，除毒热脐挛，
金疮溢血。炼化还成九光。久服通神明。生蜀郡平泽。一名铅华，生于铅。
即今熬铅所作黄丹画用者，世方亦稀用，唯《仙经》涂丹釜所须此。云化成九光者，当
为九光丹以为釜耳，无别变炼法。（《新修》七五页，《大观》卷五，《政和》一二六页）
[Luqing (Green Malachite)]
Taste: Sour. Nature: Cold. Toxicity: Non-toxic. Main actions: Tonifies Qi, treats rhinorrhea (nasal discharge), and stops diarrhea and dysentery. It grows in caves on the shady (north) side of mountains and is greenish-white in color.
This refers to the material used for painting green; it also occurs within deposits of Kongqing (Blue Malachite), growing alongside it. Contemporary painters call it "Biqing" (Emerald Green), while referring to Kongqing as "Luqing," which reverses the traditional nomenclature.
[Tieluo (Iron Shavings)]
Taste: Pungent, Sweet. Nature: Neutral. Toxicity: Non-toxic. Main actions: Treats wind-heat, malignant sores, ulcers, carbuncles, scabs, and pruritus caused by parasites in the skin. Clears residual heat from the chest and diaphragm, improves poor appetite, relieves mental restlessness, and removes black spots. Also known as "Tieye" (Iron Liquid); it can be used to dye soap black. It is found in flat marshy areas where sheep graze, near city walls, or at Xicheng. It can be harvested at any time.
[Tie (Iron)]
Main actions: Firms muscles and increases pain tolerance.
[Wei Han (Slightly Cold)]
Nature: Slightly cold. Main actions: Treats lower body disorders and rectal prolapse.
[Shengtie (Pig Iron/Raw Iron)]
Taste: Sweet. Nature: Neutral. Toxicity: Non-toxic. Main actions: Treats metal wounds, irritability with internal heat, qi stagnation in the chest and diaphragm, and indigestion. Also known as "Tiaotie."
[Tiejing (Iron Essence)]
Nature: Neutral, slightly warm. Main actions: Brightens the eyes, dissolves copper. Treats palpitations and fright, stabilizes Heart qi, treats pediatric wind-calcium epilepsy, eliminates accumulations, and treats rectal prolapse.
Tieluo is the iron slurry used for dyeing black. Shengtie refers to raw iron that has not been subjected to hammering, piercing, or boiling in cauldrons. Gangtie (Steel) is produced by smelting a mixture of raw iron and wrought iron to make swords and knives.
[Qiandan (Lead Tetroxide/Minium)]
Taste: Pungent. Nature: Slightly cold. Main actions: Treats cough and rebellious qi, gastric regurgitation, fright and epilepsy, mania, clears heat, and directs qi downward. Stops frequent urination, eliminates toxic heat causing umbilical contraction, and treats bleeding from metal wounds. When refined, it transforms into "Jiuguang" (Ninefold Radiance). Long-term consumption enhances spiritual clarity. It originates from flat marshy areas in Shu Commandery. Also known as "Qianhua" (Lead Flour), it is derived from lead.
It refers to the yellow lead oxide currently produced by roasting lead, used in painting. It is rarely used in secular medical formulas; only the *Xianjing* (Classic of Immortals) mentions its use in coating alchemical furnaces. The phrase "transforming into Jiuguang" likely refers to preparing "Jiuguang Dan" for use as furnace lining, rather than implying other chemical transformation methods.