Fascinating in detail, and quite spectacular in its account of how examination of a single footnote, and detective work around it, led to a significant rethinking of the relationship between Daoism and Buddhism.
“The Declarations of the Perfected collects fragmentary texts—poems, information on the realm of the dead, instructions for practice—revealed to Yang Xi (330—ca. 386) by celestial beings. These texts were assembled and annotated by Tao Hongjing (456–536).”