Sun Yonghua is a Chinese translator of books on mystery fiction and popular science. Public information about the translator is limited, but it can be confirmed that Sun Yonghua translates books and has rendered works such as The Five Red Herrings and Testimony in Doubt. Both are detective stories in the mystery genre, and their titles suggest the puzzle-oriented flavor common to classic detective fiction, indicating a focus on novels with carefully plotted clues and tight pacing. Beyond detective fiction, Sun Yonghua has also translated science titles such as DK's Children's Animal Encyclopedia, showing that the translation work spans knowledge-based books for different groups of readers. Judging from the existing translations, the emphasis is on preserving the suspense and informational detail of the originals so that the unfolding of cases and the presentation of knowledge remain clear and readable in Chinese.