During October 2025, Hongyao Ling focused on stabilizing memory-optimized builds in the emscripten-core/emscripten repository by addressing a critical bug in deferred module import handling. Using C and JavaScript, Hongyao resolved a TypeError that occurred during memory allocation when loading deferred modules with MEMORY64 and SPLIT_MODULE enabled. The solution involved refining the signature conversion flow to eliminate fragile JavaScript trampoline wrapping for malloc calls, enabling direct native interoperation and preventing functional regressions. This work improved the reliability of deferred module instantiation and reduced runtime failures, demonstrating depth in memory management and WebAssembly integration within complex build environments.