Microsoft is propelling the modernization of Windows forward by transitioning traditional functionalities to its premier native user interface framework, WinUI. Features like the 'Properties' window, 'AutoPlay' dialog box, and the Windows 'Run' tool now boast modern designs complete with dark mode support. In terms of performance enhancements, Microsoft has undertaken extensive refactoring and optimization efforts for WinUI 3. Take File Explorer as an illustration: following optimization, there was a 41% reduction in total memory allocation, a 63% decrease in temporary memory allocation, a 45% drop in the number of function calls, and a 25% shortening of the execution time for WinUI-related code during application startup. These optimizations have substantially minimized system resource consumption and enhanced both application startup speed and operational efficiency.