Xianwei updated the README documentation for the arcsysu/YatCC repository, focusing on clarifying the project’s structure, tasks, and educational benefits for compiler construction students. The work detailed the integration of AI-assisted learning features, providing clear guidance for both students and instructors on how to leverage these capabilities. Using technical writing skills alongside knowledge of compiler design, ANTLR, and CMake, Xianwei improved onboarding efficiency and maintainability by making the documentation more accessible and comprehensive. Although no bugs were fixed during this period, the update laid a strong foundation for future development and contributed to higher adoption and faster contributor ramp-up.