Worked on the OpenXiangShan/NEMU repository to improve documentation by addressing outdated configuration details in the README. Focused on aligning the documentation with recent changes that enabled Vector and Hypervisor extensions by default, the developer removed obsolete configuration tables and provided a concise explanation of the base configuration. This Markdown-based update clarified the current setup for new contributors and reduced onboarding friction. The work involved careful review of merged features and commit history to ensure accuracy and consistency. By streamlining the documentation, the developer enhanced maintainability and made it easier for others to understand and contribute to the project.