Loại thư (bách khoa) Đạo giáo xưa nhất — nguyên 100卷/292 phẩm (nay tàn 67-68卷). Hệ thống hóa vũ trụ quan/giới uy nghi/tu chân,调和 giáo phái. Cẩm nang tra cứu giáo nghĩa thời Lục triều, trước 云笈七签.
Ứng dụng: bách khoa · tham chiếu giáo nghĩa
北周武帝宇文邕敕纂（约574前后），现存最早大型道教类书。原百卷，今残；分类摘录魏晋南北朝道书约二百八十余种：天地、劫运、斋戒、威仪、修真、神仙品阶等。旨在统合三洞四辅、调和教派，并为灭佛后重定宗教秩序服务。研究中古道经佚文与教义结构之第一手宝库。
⚡ Ứng dụng: 查中古修炼、斋仪、宇宙论出处；命理史可借其劫运、注籍、灾期材料；非单经修法，而是“道法百科”索引。
🔗 Liên quan: 真诰；洞玄灵宝玉京山步虚经；元始五老赤书玉篇真文天书经
Ultimate Daoist knowledge is systematic: hierarchy of heavens, ranks, rites, and cosmology must be ordered so practice and salvation rest on correct structure, not isolated techniques.
1) Read the full natal structure as a hierarchy: Day Master center, then stems/branches as ranked ‘offices.’ 2) Identify which ‘ranks’ (官杀印食) dominate and whether they are in correct generative sequence. 3) Prefer luck cycles that restore missing generative links (e.g., Resource→Official when career/authority is blocked). 4) Use elemental hierarchy (生克制化) as the chart’s ‘cosmic protocol’ before applying single-star rules. 5) Treat clashing branches as disorder in the hierarchy needing mediation (合/通关).
Unlike single-theme neidan texts (内日用, 入药镜), 无上秘要 is an encyclopedic architecture of Daoism. It parallels 道藏目录详注 in cataloguing but is substantive content, not mere bibliographic index. Compared with 道门科范大全集, it frames doctrine and cosmology more than liturgical step-lists.