Zhaojiazhong worked on the mozilla/gecko-dev repository, focusing on improving LoongArch architecture support by addressing a critical bug in floating-point parameter passing. Using C++ and leveraging expertise in compiler development and system architecture, Zhaojiazhong implemented an ABI fix to ensure that floating-point parameters beyond the initial registers are correctly passed in general-purpose registers, as required by the LoongArch system ABI. The work included removing redundant code to streamline the parameter passing path and updating the JIT exit call path, which enhanced cross-architecture reliability and reduced the risk of JIT-related crashes, contributing to more robust LoongArch support.