During November 2024, Yongrong Wang enabled 64-bit simulation builds for the apache/nuttx repository, focusing on improving cross-architecture reliability and build stability. He removed legacy 32-bit configuration flags from defconfig files and addressed a 64-bit pointer handling warning in the ioe_rpmsg.c module by casting return values to uintptr_t before conversion, ensuring correct pointer management in C. His work involved careful tuning of build systems and embedded configuration, resulting in more consistent simulation behavior on 64-bit targets. The changes demonstrated a disciplined approach to version control and maintainability, reflecting a solid understanding of C programming and embedded systems development practices.