During March 2025, Jiachen Fu developed the foundational Core UI Framework for the NKU-WIKI/wxapp repository, focusing on the Discover, Home, Profile, and Search pages. Using WXML and WXSS, Jiachen established the initial UI structure and scaffolding, introducing consistent styling and responsive layouts to support a cohesive user experience. The work included defining content sections and visual styles, enabling faster iteration and improved information presentation across the mini program. Leveraging skills in frontend development, mini program development, and UI/UX design, Jiachen’s contributions provided a solid base for future feature expansion, though the scope was limited to initial framework implementation.