During November 2024, Caimengci focused on improving the login experience in the linuxdeepin/dde-session-shell repository by addressing a persistent bug affecting wallpaper stability after system upgrades. Using C++ and leveraging skills in bug fixing, system upgrade handling, and UI development, Caimengci investigated and resolved an issue where an unprocessed native image could be set as the login background, leading to visual inconsistencies on first login. The solution involved targeted code changes and thorough validation across upgrade scenarios, resulting in a more stable and predictable login screen. This work enhanced user experience by reducing post-upgrade background glitches and confusion.