Còn gọi Huyền Môn Đại Luận: tóm lược nghĩa lý Đạo giáo (tam động, tứ phụ, trai pháp…). Trình bày khái niệm “tam lục thất phẩm” trai nghi. Là cẩm nang nghĩa lý quan trọng thời Sui-Đường.
Ứng dụng: Học nghĩa lý, phân loại kinh giáo và trai pháp
A doctrinal summa of Lingbao/Dongxuan teachings (Daozang CT 1124), expounding the 'great meanings of the Mysterious Gate'—cosmology, the Three Caverns, ranks of scriptures, body-spirit correspondence, and soteriological paths. Likely Tang or earlier medieval scholastic composition used for clerical education. It systematizes Lingbao metaphysics: qi transformations, the role of zhai retreats, and the unity of Dao, scriptures, and master (道經師).
⚡ Ứng dụng: Provides the metaphysical map (Three Treasures, qi phases) against which BaZi five-phase analysis and Daoist destiny theory are calibrated.
🔗 Liên quan: 道教義樞; 雲笈七籤; 洞玄靈寶三洞奉道科戒營始
It proves that the Daoist 'mysterious gate' is a coherent doctrinal system—cosmology, scriptures, causation, and salvation—not a heap of spells. Lingbao identity is established by integrated 大義 (great meaning), which legitimates practice.
1) Before adopting a ritual, write its doctrinal premise in one paragraph. 2) Align BaZi counseling with explicit 因果 language rather than pure luckism. 3) Use the text as a checklist: does a practice serve 度人 and return to Dao? 4) Teach clients a mini-大義 before selling techniques. 5) Reject methods that cannot state their place in the system.
More abstract and definitional than 道學科儀, which operationalizes training steps. Less pantheon-narrative than 元始上真眾仙記. It is the 'constitution' text relative to later detailed liturgies.