Xiaojin developed the TableMode feature for the pingcap/tidb repository, introducing Import and Restore modes to enhance data integrity during bulk import and restore operations. By restricting DML and most DDL commands in these modes, Xiaojin’s work prevents data corruption and unintended modifications in high-risk workflows. The implementation included robust validation logic for mode transitions and integrated seamlessly with existing import and restore processes. Using Go and leveraging expertise in DDL, database internals, and error handling, Xiaojin focused on operational safety and reliability. The feature addressed a critical need for safer schema management and more predictable testing in production environments.