During July 2025, Jibing Li focused on enhancing the reliability of the group commit path in the Jibing-Li/incubator-doris repository. He addressed a critical bug by refining error handling and improving fault injection testing, using C++ and Groovy to update test parameters and simulate real-world failure scenarios. His work improved error reporting during group commit operations, enabling faster diagnosis and remediation of issues under high-throughput conditions. By aligning testing with production-like environments, Jibing strengthened operational stability and reduced error ambiguity. This targeted backend development and bug fixing contributed to smoother deployments and fewer production incidents, demonstrating depth in fault tolerance engineering.