During January 2025, Chengguo Li focused on stabilizing the cosim integration within the rapidstream-tapa repository. He addressed a reliability issue by updating the Python-based version parsing logic to handle Vivado version strings in a case-insensitive manner, using improved regular expressions. This scripting and system integration work ensured that the cosim module operated consistently across diverse Vivado installations, reducing environment-specific failures and improving continuous integration stability. Although the scope was targeted, the fix demonstrated careful attention to cross-environment compatibility and maintainability. Chengguo’s contribution reflected a methodical approach to resolving infrastructure bugs in complex, multi-tool software environments.