During November 2024, Zhanggeng Zhang focused on enhancing the Seata Common Module within the apache/incubator-seata repository by developing targeted unit tests in Java. He concentrated on improving test coverage for components such as ExceptionUtil and UUIDGenerator, aiming to validate serialization flows and prevent regressions. By expanding tests for Instance and NamingServerNode, Zhanggeng addressed potential serialization issues early in the development cycle. His approach emphasized thorough unit testing and careful validation of edge cases, which contributed to more reliable code and safer future refactoring. This work demonstrated a methodical application of Java and unit testing best practices to reinforce code quality.