Tsinglua focused on enhancing code quality and maintainability across several repositories, including 0xPolygon/polygon-cli, canopy-network/canopy, and kaiachain/kaia. They refactored concurrency handling in polygon-cli by replacing manual WaitGroup management with WaitGroup.Go, simplifying asynchronous logic in Go. In canopy, they improved membership checks by adopting slices.Contains, making the code safer and easier to read. For kaia, Tsinglua introduced maps.Copy to ensure safer map data handling. Throughout the month, they also standardized documentation and comment formatting in C++ and Rust projects, supporting onboarding and long-term maintenance. Their work emphasized code clarity, robust concurrent programming, and sustainable software practices.