During March 2025, Haoyu Huang focused on improving the stability of game mechanics in the vic3-divergences/divergences repository by addressing a logic error related to state region matching. He identified and fixed an inconsistency in state region definitions within decision files, standardizing region identifiers to ensure accurate region matching and prevent gameplay anomalies. This targeted bug fix required careful configuration management and a strong understanding of game development workflows. Working primarily with text-based configuration files, Haoyu aligned his changes with repository standards, ensuring traceability and minimizing risk to related modules. The work demonstrated attention to detail and a methodical engineering approach.