During November 2024, Hedong Gao focused on stabilizing CAN bus handling in the apache/nuttx repository by addressing a critical bug in the CAN stack. He improved system reliability by removing redundant upper-layer checks and relocating same-ID frame verification to the lower CAN driver layer, ensuring clearer separation of responsibilities and simplifying the codebase. Working primarily in C and leveraging his expertise in embedded systems and device drivers, Hedong’s changes enhanced the maintainability and correctness of CAN communications. Although no new features were introduced, his targeted engineering work demonstrated depth in system-level problem solving and a commitment to robust code quality.