During their two-month contribution to the archlinuxcn/repo project, Longhao focused on enhancing packaging reliability and modernizing build processes. They improved Go module download reproducibility by enabling the -modcacherw flag in the Gatus PKGBUILD, ensuring writable module caches across diverse Linux environments and continuous integration systems. This change aligned the repository with reproducible-build standards and reduced environment-specific inconsistencies. Additionally, Longhao upgraded the zeal-git package to Qt6, leveraging CMake and package management skills to improve compatibility and performance with the latest Qt libraries. Their work demonstrated a methodical approach to build system reliability and technical debt reduction without introducing new bugs.