Contributed to the alibaba/ROLL repository by developing comprehensive documentation for the Freshness-Aware-PER feature in reinforcement learning. Focused on improving project onboarding, the work involved updating the README.md file using Markdown to provide a clear project description and detailed usage guidelines. This documentation clarified the functionality of Freshness-Aware-PER, enabling faster understanding for new contributors and supporting future enhancements. Demonstrated skills in AI concepts, technical writing, and reinforcement learning, with an emphasis on documentation best practices and version-controlled content updates. The contribution addressed the need for accessible, well-structured information, ultimately streamlining the onboarding process and enhancing overall project maintainability.