Jingshan contributed targeted improvements to the pytorch/pytorch and pytorch/torchrec repositories, focusing on code maintainability and documentation clarity. In pytorch/pytorch, Jingshan corrected typos in the _export function’s docstring, enhancing the accuracy and usability of the documentation for future contributors. For pytorch/torchrec, Jingshan removed unused functions from the JaggedTensor module, streamlining the codebase and reducing technical debt. These efforts involved Python programming, code refactoring, and software maintenance, demonstrating a methodical approach to repository standards and cross-repo collaboration. The work addressed both immediate documentation issues and long-term maintainability, resulting in cleaner, more accessible code for ongoing development.