During February 2025, Lingjun Chen focused on improving the reliability of emergency chunk creation in the TencentKona-8 repository by addressing a critical bug in dump path formatting. Using C++ and leveraging expertise in bug fixing, Lingjun modified the create_emergency_chunk_path function to correctly use repository_path as the first argument to jio_snprintf, ensuring accurate path lengths and dependable file creation. This targeted fix reduced dump failures and contributed to more predictable deployment behavior. Although the work centered on a single bug rather than new features, the solution demonstrated careful attention to detail and a strong understanding of C++ development best practices.