Lixing focused on stabilizing the LoongArch test suite across the zephyrproject-rtos/gcc and rust-lang/gcc repositories by addressing persistent test hangs during make check. Using expertise in build systems, compiler testing, and embedded systems, Lixing implemented a state-preserving mechanism for the dg-do-what-default setting in Tcl, ensuring the test environment’s state was consistently saved and restored across configurations. This technical approach reduced flaky continuous integration results and improved feedback speed for LoongArch targets. The work demonstrated careful debugging and cross-repository collaboration, resulting in more deterministic test harness behavior and a more reliable testing process for LoongArch development workflows.