Partnering with Dongfeng group, we conceptualized and developed the IVI and Cluster interactive system and key visual for its latest product lineup, covering 16 functional modules including the core framework and smart scene cards. We organized expert evaluations and user testing, completed full-process usability validation of interactive prototypes, and delivered structured experience optimization reports. Key achievements: Delivered comprehensive brand design strategy and competitive analysis reports; completed the HMI interaction system design for more than 50 core pages across 16 major modules; Design the visuals of key functions, established complete interaction design documents and unified UX design guidelines to support large-scale development and implementation.