During October 2024, Kongyi focused on improving build reliability for the fmtlib/fmt repository by addressing a compiler warning related to error handling in C++. He enhanced the throw_duration_error function by adding the noreturn attribute, which silenced the Clang -Wmissing-noreturn warning and reduced unnecessary noise in continuous integration pipelines. This targeted fix improved static analysis accuracy and maintained correct error semantics across both Clang and GCC compilers. Kongyi’s work demonstrated a solid understanding of C++ development and compiler behavior, contributing to a cleaner build process and a better developer experience, though the scope was limited to a single bug fix.