During January 2025, Thanh Le contributed to the mezonai/mezon and nccasia/mezon repositories by developing real-time chat enhancements and refining UI/UX features. He implemented emoji and sticker support in desktop chat, optimized message grouping for clarity, and introduced inline YouTube embedding through React and TypeScript. Thanh also improved activity tracking by categorizing user actions and ensuring data consistency with Redux and Context API. His work addressed both feature development and bug resolution, focusing on reliability, performance, and user engagement. The depth of his contributions is reflected in robust error handling, state management, and thoughtful component styling across the codebase.