Shangqing Taiyi Emperor's Secret Book of Great Cinnabar: Diagram and Instructions for Resolving the Twelve Fetal Nodules is an early classic of the Shangqing School, presumably compiled during the Northern and Southern Dynasties (420-589 CE).
It consists of one scroll and is included in the Zhengyi (Orthodox Unity) Section of the Daozang (Taoist Canon).

This text discusses methods of "preserving the spirit and wearing talismans" to unlock and resolve the twelve fetal nodules within the human body.
Its content is largely identical to the latter part (from page 38 onwards) of Dongzhen Taiyi Emperor's Secret Book of Great Cinnabar: Profound Scripture of True Mystery. However, it incorporates dozens of images of divine beings. It is suspected that this work was adapted during the Northern and Southern Dynasties by Taoist priests who excerpted and reorganized content from the aforementioned scripture.
See the entry for the aforementioned scripture for further reference.
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