During October 2024, Ziyang Yang enhanced the apache/paimon repository by implementing a feature that propagates the partition.expiration-time property from Hive integration to the Hive Metastore. This work involved modifying the HiveCatalog class in Java to conditionally transfer expiration settings, ensuring they are stored in the metastore and accessible to other engines querying HMS. By focusing on data cataloging, Hive integration, and metastore management, Ziyang improved cross-engine interoperability and data governance. The solution addressed the need for consistent expiration policies across platforms, demonstrating a solid understanding of catalog-level code changes and conditional logic within distributed data environments.