Worked on targeted improvements in cloudwego/kitex and ClickHouse/clickhouse-docs, focusing on code quality and documentation accuracy. In cloudwego/kitex, refactored the Build Command logic in Go by removing a redundant error check from args.go, streamlining error handling while maintaining existing behavior and enhancing maintainability. This change reduced code complexity and aligned with best practices for error management in command line interfaces. Later, addressed a documentation bug in ClickHouse/clickhouse-docs by correcting the MySQL user reference in multilingual quick-start guides, replacing an incorrect identifier to prevent user misconfiguration. Demonstrated skills in Go, Markdown, code refactoring, error handling, and technical documentation.