味甘、酸、咸，平，无毒。主明目，利九窍，耳聋，心下邪气，令人吐，杀诸毒三虫
。久服通神明，轻身，延年不老。可消为铜剑，辟五兵。生豫章山谷。采无时。
陶隐居云∶此医方不复用，市人亦无卖者，唯《仙经》三十六水方中时有须处。铜剑之
法，
具在《九元子术》中。唐本注云∶陶所云，今空青，圆如铁珠，色白而腹不空者是也。研之
色白如碧，亦谓之碧青，不入画用。无空青时，亦用之，名鱼目青，以形似鱼目故也。今出
简州、梓州者好。
\r绿青\pd19.bmp\r
味酸，寒，无毒。主益气，疗鼽鼻，止泄痢。生山之阴穴中，色青白。
陶隐居云∶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。唐本注云∶绿青即扁青也，画工呼为石绿。其碧青即白青也，不入画用。
图经曰∶绿青，今谓之石绿。旧不着所出州土，但云生山之阴穴中。《本经》次空青条
上云
∶
生益州山谷及越 山有铜处，此物当是生其山之阴耳。今出韶州、信州。其色青白，即画工
用画绿色者，极有大块，其中青白花纹可爱。信州
人用琢为腰带环及妇人服饰。其人药者，当用颗块如乳香不挟石者佳。今医家多用吐风痰。
其法，拣取上色精好者，先捣下筛，更用水飞过至细，乃再研治之。如风痰眩闷，取二、三
钱
匕，同生龙脑三、四豆许研匀，以生薄荷汁合酒温调服。使偃卧须臾，涎自口角流出，
乃愈，不呕吐。其功速于它药，今人用之，比比皆效，故以其法附之云。又下条云∶扁青生
朱崖山谷及武都朱提。苏恭云∶即绿青是也。海南来者，形块大如拳，其色又青，腹中亦时
有空者，今未见此色。武昌、简州、梓州亦有，今亦不用。
衍义曰∶绿青，即石碌是也。其石黑绿色者佳，大者刻为物形，或作器用。又同 砂，
作吐
风涎药，验则验矣，亦损心肺。
Baiqing (a mineral drug) tastes sweet, sour, and salty; it is neutral in nature and non-toxic. It primarily benefits the eyes, unblocks the nine orifices, treats deafness, eliminates pathogenic qi under the heart, induces vomiting, and kills various toxic parasites. Long-term consumption clarifies the spirit, lightens the body, prolongs life, and prevents aging. It can be melted to cast copper swords for warding off five types of weapons. It grows in the valleys of Yuzhang. There is no fixed time for harvesting.
Tao Hongjing stated: This medicinal material is no longer used in medical prescriptions, nor is it sold in markets; it is occasionally required only in certain formulas within the "Thirty-Six Waters Method" of the Immortal Classics. The method for casting copper swords is detailed in the "Techniques of Jiu Yuanzi." The annotation of the New Tang Materia Medica states: What Tao Hongjing described refers to the current Kongqing (Azurite), which is round like an iron bead, white in color, and hollow inside. When ground, its color is white like jade, also known as Biqing (Greenish-White), but it is not used for painting. In the absence of Kongqing, this substance may be used as a substitute, named Yumuming Qing (Fish-Eye Green) due to its resemblance to fish eyes. Those produced in Jianzhou and Zizhou are currently considered superior.
Lüqing
Tastes sour; it is cold in nature and non-toxic. It primarily tonifies Qi, treats rhinitis (nasal congestion with discharge), and stops dysentery. It grows in caves on the shady side of mountains, appearing greenish-white.
Tao Hongjing stated: This is the pigment used for painting green, which is also derived from Kongqing as a byproduct. Current painters call it Biqing, while referring to Kongqing as Lüqing, which is exactly reversed. The annotation of the New Tang Materia Medica states: Lüqing is Bianqing, called Shilü (Stone Green) by painters. The Biqing mentioned therein is Baiqing, which is not used for painting.
The Illustration of Materia Medica states: Lüqing is now called Shilü. Old texts do not specify the provinces of origin, stating only that it grows in caves on the shady side of mountains. The Classic of Materia Medica, above the entry for Kongqing, notes: It grows in the valleys of Yizhou and in Yue Mountains where copper exists; this substance likely grows in the shady areas of these mountains. It is currently produced in Shaozhou and Xinzhou. Its color is greenish-white, which painters use for green pigments. Large blocks exist, featuring lovely greenish-white patterns. People in Xinzhou carve them into belt rings and women's ornaments. For medicinal use, one should select granular pieces resembling frankincense without stone impurities. Current physicians often use it to induce vomiting of wind-phlegm. The method is as follows: Select high-quality material, crush and sieve it, then wash with water (water levigation) until extremely fine, and grind again. For dizziness and oppression caused by wind-phlegm, take two or three qianbi (small spoonfuls), mix evenly with three or four grains of raw Borneolum Syntheticum (Longnao), and administer warm with wine mixed with fresh Menthae Haplocalycis Juice (Bohe). Have the patient lie down for a moment; phlegm will naturally flow from the corner of the mouth, and the condition will resolve without vomiting. Its effect is faster than other drugs. Currently, people use it with frequent success, so this method is appended here. Another entry below states: Bianqing grows in the valleys of Zhuya and Zhuti in Wudu. Su Gong stated: It is Lüqing. Those coming from Hainan are block-shaped, as large as fists, darker green in color, and sometimes hollow inside, though such colors are rarely seen today. It is also found in Wuchang, Jianzhou, and Zizhou, but is no longer used.
The Definition of Materia Medica states: Lüqing is Shilu. Stones that are dark green are superior; large ones can be carved into figurines or made into vessels. Additionally, when combined with Cinnabar (Zhusha) to make medicines for inducing vomiting of wind-phlegm, although effective, it damages the Heart and Lungs.