During the month, Hexiaohu focused on improving the reliability of the babelfish_extensions repository by addressing a critical issue in the test suite related to index handling before version 15.5. He corrected mismatches in test expectations for the babel_index_nulls_order_before_15_5 test, ensuring that numeric values and index names in the output accurately reflected the intended behavior. This work involved detailed database testing and careful use of SQL to align test results with expected outcomes. By stabilizing the test suite and enhancing CI accuracy, Hexiaohu contributed to more maintainable and trustworthy testing workflows, demonstrating depth in database validation and test maintenance.