Chen Wu focused on maintaining build stability for the espressif/esp-iot-solution repository, addressing a critical compilation issue in the Bootloader_plus component. Using C and leveraging expertise in build systems and embedded systems, Chen updated a function signature to resolve a -Wincompatible-pointer-types error introduced by an xz version upgrade. This targeted fix restored build compatibility and improved downstream integration, ensuring that dependent projects could continue to build reliably. By incrementing the component version, Chen enabled precise dependency tracking in version control and continuous integration workflows. The work demonstrated careful attention to compatibility and regression prevention within a complex embedded software environment.