Taiqing jinshenye single crystal. Shen Dan Jing of Taiying Jinye is an important work of Taoism, also referred to as Shen Dan Jing of Shangqing Jinye. Divided into the first, middle and second volumes. Author: The original work was not written by the author, or it was written by Ge Hong. The existing edition has the preface of Zhang Daoling, which records the theory of arrogance, which is the way of keeping in good health for ancient Chinese. The volume is about a real person named Chang Shengyin. This volume mainly describes the technology of returning gold liquid to Dan, which is a precious material for studying the history of science and technology in China. There is a preface to "Bao Pu Zi" under the volume, which describes many local folk customs and is a valuable material for studying China and world history.