Zhufeng Zhu enhanced the ManMetGames/Game-Engines-25-26-Ionix-2 repository by expanding the physics engine to support creation of circle, box, and polygon shapes, enabling more complex collision and gameplay scenarios. Working in C++ with a focus on game development and input handling, Zhufeng also implemented controller input normalization, ensuring consistent axes and trigger behavior across devices. The work was delivered as well-scoped, incremental changes that aligned with existing engine APIs and maintained testability. These enhancements improved both the configurability of the physics system and the reliability of input handling, supporting faster feature iteration and more efficient quality assurance processes.