Yan worked on the archlinuxcn/repo repository, delivering a version bump to 1.5.0 for the devtools-archlinuxcn package. They synchronized the PKGBUILD with upstream changes, updating dependencies and checksums to maintain compatibility and reproducibility. Using bash scripting and Linux system administration skills, Yan ensured the packaging process aligned with upstream standards, which supports smoother upgrades and reduces maintenance overhead. The work focused on improving release readiness and packaging stability, with careful attention to checksum validation and dependency management. While the scope was limited to a single feature over one month, the changes contributed to a more stable and maintainable package ecosystem.