Liu Qingyu is a Chinese author about whom little public information is available. Only one work by this author is currently included in the collection: the social novel The Famous Detective of the Old Town. Based on the available information, Liu's writing falls under the category of social fiction, with a story set against the backdrop of an old town and blending detective elements with observations of everyday life and human relations. As the author's dates of birth and death, educational background, and writing career cannot be verified, little more can be said about the author's life. Judging from the existing work alone, readers may regard Liu as a writer attentive to small-town life and social reality, and The Famous Detective of the Old Town serves as the main entry point for understanding this author's writing.