味辛，寒，有毒。主鬼疰，寒热，鼠 ，恶疮，死肌，破症瘕，堕胎。蚀疮中恶肉，鼻
中
服一刀圭即下。一名 青，一名青蛙。生汶山川谷，八月取。
恶甘草。真者出梁州，状如大马蚁有翼；伪者即斑蝥所化，状如大豆，大都疗体略同，
必不能得真尔，此亦可用，
故有 青之名。 字乃异，恐是相承误矣。
〔谨案〕形如大马蚁者，今见出 州者是也。状
如大豆者，未见也。
味辛，微寒，有毒。主漏下赤白，寒热，破石淋，杀禽兽贼鼠。除五脏间热，肌中鼠 ，
止
利机关。用之当炼，得水烂人肠。又云得水良。一名马蛤。生江湖
李云生江汉中，长六、七寸，汉间人名为单姥，亦食其肉，肉似蚌。今人多不识之，大
都似今 KT 而非。方用至
少。凡此类皆不可多食，而不正入药，惟蛤蜊煮之醒酒。蚬壳陈久者止痢。车螯、蚶蛎、
之属，亦可为食，无损益，
不见所主。雉入大水变为 ， 云是大蛤，乃是蚌尔，煮食诸蜊蜗与菜，皆不利人也。
〔谨
案〕蚬，冷，无毒。主时气开
胃，压丹石药，及疔疮，下湿气，下乳，糟煮服良。生浸取汁，洗疔疮。多食发嗽，并冷气，
消肾。陈壳，疗阴疮，止
痢。蚬肉，寒，去暴热，明目，利小便，下热气，香港脚，湿毒，解酒毒，目黄。浸取汁服，
主消渴。烂壳，温，烧为白
灰饮下，主反胃，吐食，除心胸痰水。壳陈久，疗胃反及失精。
[Di Dan]
Taste: Pungent; Nature: Cold; Toxicity: Toxic.
Indications: Governs Gui Zhu (a contagious, lingering consumptive disease), alternating chills and fever, Shu Lou (cervical lymph node tuberculosis), malignant sores, dead muscle tissue, breaking up Zheng Jia (abdominal masses), and inducing abortion. It can erode foul flesh in sores. If the powder is insufflated into the nose, a dose of one Dao Gui (an ancient unit of measure, approx. 0.5-1g) will cause expulsion.
Synonyms: Qing, Qing Wa.
Habitat: Produced in valleys of Mount Wen; harvested in the eighth lunar month.
Incompatibility: Averse to Gan Cao (Glycyrrhizae Radix et Rhizoma).
Description: The genuine Di Dan originates from Liang Zhou, resembling a large winged ant. The counterfeit is transformed from Ban Mao (Mylabris), resembling a soybean. Their therapeutic effects are largely similar, but the counterfeit cannot match the efficacy of the genuine product; hence the name "Qing". The character "Di" is likely an variant form, probably an error passed down through generations.
[Commentary]: Those resembling large ants are seen today in Yi Zhou. Those resembling soybeans have not been observed.
[Ma Dao / Clam-like Species]
Taste: Pungent; Nature: Slightly Cold; Toxicity: Toxic.
Indications: Governs red and white leukorrhea (non-menstrual vaginal discharge with red and white colors), alternating chills and fever, breaking up Shi Lin (urinary calculi), and killing birds, beasts, and rats. Clears heat between the five zang organs, removes Shu Lou from muscles, and regulates joint function (Note: Text implies regulating joints or stopping slippage). When used, it must be processed; otherwise, upon contact with water, it may rot and damage the intestines. Another view states that water enhances its effect.
Synonym: Ma Ha.
Habitat: Produced in rivers and lakes.
Li Yun stated it grows in the Jianghan region, measuring six to seven cun. People in Han call it "Dan Lao" and consume its meat, which resembles clam meat. Most people today do not recognize it; it generally resembles modern [KT - text unclear/unidentified], rather than common clams. It is rarely used in prescriptions. Generally, such species should not be consumed in large quantities and are not standard medicinal materials. Only Ge Li (Clam) boiled can resolve alcohol intoxication. Old Xian (Corbicula) shells can stop diarrhea. Che Ao (Tridacna), Han (Arcidae), and Li (Oyster) belong to this category and can be eaten, offering no particular benefit or harm, with no specific primary indications recorded.
When a pheasant enters deep water, it transforms into [Species Name Missing], said to be a large clam, but is actually a mussel. Boiling and eating various clams, snails, and vegetables is detrimental to humans.
[Commentary]: Xian (Corbicula fluminea), cold nature, non-toxic. Governs seasonal epidemic diseases, opens the stomach, counteracts the toxicity of Dan Shi medicines (mineral drugs), treats Ding Chuang (furuncles), drains dampness, promotes lactation. Cooked with lees is beneficial. Fresh juice applied externally washes Ding Chuang. Excessive consumption induces cough, causes cold qi, and depletes the kidneys. Old shells treat yin sores and stop diarrhea. Xian meat, cold nature, removes sudden heat, brightens the eyes, promotes urination, drains hot qi, treats Hong Kong Jiao (Charley Horse/Beriberi), damp-toxin, resolves alcohol toxin, and treats yellow eyes. Juice taken internally governs Xiao Ke (wasting-thirst syndrome). Rotten shells, warm nature, burned to white ash and taken with water, govern regurgitation, vomiting, and removes phlegm-fluid from the chest and heart. Old shells treat gastric regurgitation and seminal emission.