Worked on stabilizing the PDFMathTranslate pipeline by improving temporary file cleanup within the pdf2zh high-level module. Refactored the cleanup logic to use Python’s Path objects and introduced robust error handling, ensuring that temporary files are reliably removed after processing. This change addressed cleanup-related failures that previously disrupted automated translation workflows, enhancing the reliability and maintainability of the PDF-to-Chinese translation process. The work focused on error handling and file management, resulting in clearer code and reduced maintenance overhead. All improvements were delivered through targeted bug fixes in the kaina404/PDFMathTranslate repository, emphasizing code quality and operational stability over new feature development.