Worked on enhancing the user experience for video conference emoji reactions in the nccasia/mezon-fe repository, focusing on UI polish and responsiveness. Used React, TypeScript, and CSS to adjust emoji animation durations and refine the display name styling for reactions, resulting in a more visually appealing and responsive interface. Addressed reaction speed improvements through targeted code changes and ensured stable integration by resolving a merge conflict during delivery. The work centered on front end development and UI/UX, delivering a single feature that improved the perceived responsiveness of emoji reactions without introducing new bugs, demonstrating attention to detail in interface refinement.