Song Xun is an author about whom very little public information is available. The library currently holds only one work by this author, a social novel titled Green Blood. Reliable information on nationality, dates of birth and death, educational background, and writing career is unavailable, so a full biographical outline cannot be drawn. Based on the existing material, Song Xun's writing profile emerges mainly through this single work: classified as a social novel, it suggests a focus on real social life and on the relationship between individuals and their social environment, rather than purely imaginative or genre-driven storytelling. With only one work on record, it is not yet possible to judge whether the author has a consistent thematic preference or stylistic direction, nor to assess a position or influence in contemporary literature. For readers wishing to learn about Song Xun, the most direct route remains reading Green Blood and experiencing its narrative perspective and language firsthand.