张紞

Zhang Dan is an author about whom little public information is available. Four of his works are currently held in the collection: Annotated Edition of the Collected Works of the Four Gentlemen of Pinyang, Annotated Edition of the Yunnan Military and Administrative Records, Annotated Edition of the Collected Works of Mr. Zhang Yan'an, and the Yunnan Military and Administrative Records. These titles show that his main focus is the collation and annotation of ancient texts and local documents: he has edited and annotated both the collected writings of local worthies and a corpus of Yunnan regional administrative records. Such work generally requires familiarity with textual transmission, institutional systems, and historical context, and his approach appears rigorous and practical, aimed at clarifying meaning and preserving historical sources rather than offering popular narration for a general readership. The collection classifies his works under history, literary appreciation, and social science, indicating that these annotated editions combine documentary value with readability. Since his dates, native place, education, and official positions cannot be verified, his life remains difficult to outline; yet on the strength of these four works alone, Zhang Dan has left useful contributions to the preservation and dissemination of local documents.