During September 2025, Wangyu focused on improving the documentation for the foundry-rs/book repository, addressing a critical issue in the installation guidance for nightly builds. By updating the Markdown-based documentation to replace the incorrect --install flag with --version, Wangyu resolved a bug that previously caused installation errors for new users. This change streamlined the onboarding process and reduced confusion for contributors, ensuring that the documentation accurately reflected the nightly build process. The work demonstrated attention to detail in technical writing and version control, with traceable commits that support future maintenance and audits, though no new features were developed during this period.