During February 2025, Bui Hien focused on enhancing the build reliability of the TungKengM2/24hNews repository by implementing dependency locking. He introduced a package-lock.json file using npm and JSON, ensuring that all transitive dependencies were sealed for consistent installs across development, staging, and production environments. This approach addressed the need for reproducible builds and more predictable deployments, laying the groundwork for future CI/CD improvements. While no bug fixes were required during this period, his work centered on stabilizing the build pipeline through careful dependency management, resulting in a deterministic install process that supports ongoing development and deployment consistency.