During April 2025, Sun Yizhong focused on maintenance and documentation improvements across the lizongying/homebrew-cask and RSSNext/Folo repositories. He removed the deprecated folo@nightly cask from lizongying/homebrew-cask, reducing the risk of outdated installations and streamlining ongoing maintenance. In RSSNext/Folo, he corrected the Homebrew Cask installation URL in the README, ensuring macOS users received accurate installation guidance. His work emphasized clear documentation and consistent deprecation status across both projects, using Markdown and Ruby to implement changes. The updates improved user onboarding and reliability, reflecting a methodical approach to repository hygiene and Homebrew Cask management within a short timeframe.