Ziheng worked on enhancing the documentation for the microsoft/mattersim repository, focusing on improving the MatterSim README to support community engagement and reproducibility. Using Markdown and leveraging strong documentation skills, Ziheng clarified model versioning and defined the scope of MatterSim-v1 for atomistic simulations, providing clear guidance for new contributors. The updates aimed to reduce ambiguity for users and establish a more robust foundation for reproducible research. While no bugs were fixed during this period, the work demonstrated attention to detail and a methodical approach to technical writing, resulting in more accessible onboarding and better traceability for the MatterSim project.