Yuān yuán dào miào dòng zhēn jì piān 淵源道妙洞真繼篇
Continuation-Treatise on the Source-Abyss Wondrous Way of Cavern-Perfection
by 李景元 (Lǐ Jǐngyuán) — Sòng Daoist
A three-juàn Sòng Daoist philosophical-ritual treatise continuing (jì piān 繼篇) a lost parent-text. Preserved as DZ 995 / CT 995 (Tài xuán bù 太玄部).
Dating. Sòng. Dynasty: 宋.