During a two-month period, Xlighting focused on kernel and build system reliability across openwrt/packages and coolsnowwolf/immortalwrt. In the ImmortalWRT repository, Xlighting removed upstreamed Rockchip DRM patches, cleaned header inclusions, and deleted obsolete files, reducing patch drift and improving kernel build consistency using C and Makefile expertise. Later, Xlighting addressed build robustness in the Coremark package for OpenWrt by ensuring idempotent directory creation with shell scripting, preventing rerun failures and enhancing CI reliability. The work demonstrated a methodical approach to codebase hygiene and build system hardening, contributing to more maintainable embedded systems and streamlined development workflows for downstream users.