Mengyu worked on enhancing data partitioning efficiency in the rustfs/rustfs repository, focusing on backend development using Rust. During the month, Mengyu improved the optimal_part_info function to calculate part sizes more accurately, addressing edge cases that previously led to mispartitioning of object sizes. This technical approach increased the reliability and efficiency of data handling within the system, aligning with performance and customer value goals. The work demonstrated a solid understanding of Rust and backend architecture, with careful attention to detail in partitioning logic. While the scope was focused, the solution addressed a nuanced problem in distributed data management workflows.