During November 2024, Xiaohui contributed to the openrewrite/rewrite-docs repository by enhancing the testability of the Java recipe guide. Xiaohui implemented a default constructor for the SayHelloRecipe class, allowing it to be instantiated without arguments during testing. This adjustment, made using Java, improved the reliability and maintainability of documentation tests by enabling zero-argument instantiation, which supports faster iteration and lays the groundwork for broader testability improvements. Xiaohui’s work focused on feature development rather than bug fixes, and also involved technical writing in Markdown to support documentation. The contribution demonstrated a targeted, incremental approach to improving developer workflows.