Cẩm nang phân loại dược liệu ngoại đan và hoàng bạch thuật theo từng nhóm (kim ngân, hoàng, sa, phàn, thanh…). Giải thích tính chất, phản ứng và cách dùng; mang tính cẩm nang thực hành.
Ứng dụng: Tra cứu dược liệu luyện đan, phân loại khoáng dược ngoại đan.
唐獨孤滔撰，三卷，洞神部眾術類。外丹原料與方劑分類總錄，按金石品類分篇，如卷上「金銀篇」起首論麩金等天然金銀形態與入丹性質，繼及銀、銅、鉛、汞、砂、礬、鹽等藥性、產地、真偽與配合禁忌。不同於《石藥爾雅》偏重隱名訓釋，本書重「鑑源」——辨藥物來源、品質與方中地位，供飛煉點化、黃白術取用。與梅彪書互補：一釋名、一辨源，同為唐代外丹藥材學雙璧。
⚡ Ứng dụng: 煉丹前鑑別藥材真偽、產地與配伍；與《石藥爾雅》對讀，還原隱名藥物的實際來源。
🔗 Liên quan: 石藥爾雅；丹房奧論；鉛汞甲庚至寶集成
Dan Fang Jian Yuan proves that elixir formulas must be sourced and authenticated—‘mirroring the source’—because spurious recipes circulate with prestige titles. Discriminating origin is the logical filter that separates operative methods from literary forgeries.
1) For any cultivation recipe (herb, mineral, or ‘spiritual fire’ metaphor), demand lineage and earliest attestation. 2) Cross-read at least two independent witnesses before practice. 3) In BaZi remedial culture, reject one-off internet ‘elixirs’ lacking source chain. 4) Rank methods by transparency of process variables (times, signs, stop conditions). 5) Keep a rejected-formula list to prevent cyclic rediscovery of known dross.
Compared with 石藥爾雅 (what the substance is called) and 大丹記 (how a great elixir proceeds), Jian Yuan answers ‘which text is trustworthy.’ It differs from hagiographic 神仙傳 by applying critical sourcing rather than faith in miracle stories; the why is risk control in a literature flooded with pseudepigrapha.