Zhang Xi is a Chinese author whose real name, dates of birth and death, and educational background remain limited in publicly available sources. It can be confirmed that the library holds one work by this author, the modern romance novel The Princess and the Knight. Judging from the title and its classification, the work belongs to the modern romance genre, revolving around a princess-and-knight style relationship and carrying the romantic atmosphere and emotional tension typical of the genre. Because Zhang Xi has left no biographical records available for reference, a full account of the author's creative output and writing style cannot yet be given; only a brief outline based on the existing information is possible. The Princess and the Knight serves as the main entry point for understanding Zhang Xi's writing orientation, allowing readers to observe how the author handles character relationships and emotional narrative within the framework of modern romance. Overall, Zhang Xi's public profile remains obscure and awaits more works and materials for a fuller understanding.