Song Keshu is an author for whom limited public information is available; only one work by this author can currently be identified, the biographical book The Biography of Wu Zetian. The book is classified under general biography, suggesting an approach centered on narrating a historical figure's life and offering an overall critical portrait, rather than specialized textual research or period-specific study. Wu Zetian was the only woman in Chinese history to formally take the throne as emperor, and the historical sources, legends, and later evaluations surrounding her are highly complex. Writing a biography of such a figure generally requires balancing official histories, miscellaneous notes, and later interpretations, while attending to both narrative readability and historical grounding. Song Keshu's choice of this subject indicates a sustained interest in Tang dynasty history and imperial biography. As no public record of the author's life, identity, or academic background has been found, speculation about personal experience would be inappropriate; judgments about writing style and influence should also be limited to this single work and treated with caution, with further details awaiting new information.
