不著撰者

"Anonymous Author" (Buzhuo Zhuanzhe) is not the name of a specific writer but a conventional attribution in the collation and cataloguing of Chinese classical texts, indicating that the author is no longer identifiable or that the original work did not name one. The work included here, Essential Points on Cultivating the Great Elixir (Xiulian Dadan Yaozhi), falls into this category: its date of composition, the identity of its author, and any biographical details are unrecorded, and public information is limited, so only the work itself can be examined. Judging from its title and contents, it deals with the essentials of alchemical cultivation and belongs to the literature of traditional Daoist alchemy and health-preserving techniques. Its language relies heavily on technical terminology, and its exposition emphasises procedures, fire control, and prohibitions, in a plain and practical style. Works of this kind were often compiled and copied by later hands, with authorial information gradually lost in transmission; recording them as "Anonymous Author" thus preserves the textual situation while reminding readers to assess the views cautiously in light of the relevant background.