Miaolei developed board support package (BSP) support for the Renesas RA4E2 EK development board within the levizh/rt-thread repository, enabling RT-Thread to operate on this hardware platform. Using C and C++ in an embedded systems context, Miaolei implemented configuration files, integrated hardware drivers, and provided documentation to facilitate adoption by other developers. The work included removing an unused file to streamline the BSP and reduce build noise, as well as ensuring compatibility with the SOC_SERIES_R7FA4E2. This contribution expanded hardware coverage for RT-Thread and improved maintainability, demonstrating a thorough approach to embedded RTOS integration and hardware interfacing.