During November 2024, CNSCOO focused on enhancing the robustness of enum deserialization in the alibaba/fastjson2 repository. Addressing a bug where enums with Integer value fields could not be deserialized from JSON strings, CNSCOO implemented logic to convert non-String values to String before storage, ensuring compatibility with APIs that encode enum values as stringified integers. This solution, developed in Java and Kotlin, was reinforced with targeted unit tests to verify correct parsing behavior. The work improved JSON deserialization reliability for integer-based enums, deepening test coverage and reducing potential production issues related to enum handling and JSON deserialization workflows.