Yunhao contributed to automation and documentation improvements across two repositories over a two-month period. In lizongying/homebrew-cask, Yunhao enabled automatic updates for the ExpressVPN Homebrew Cask, reducing manual maintenance and aligning the package with Homebrew’s auto-update standards using Ruby and DevOps practices. In cse210-fa24-group4/cse210-fa24-group4, Yunhao introduced a reusable Architecture Decision Records template written in Markdown, establishing a consistent approach for documenting architectural decisions and improving onboarding and maintainability. The work demonstrated a focus on package management, technical writing, and process automation, delivering targeted enhancements that addressed both operational efficiency and documentation quality.