During April 2025, this developer enhanced the umnooob/course-demo repository by improving course project documentation. They authored a new Retrieval-Augmented Generation (RAG) topic entry in the 课程大作业.md file, integrating a GitHub repository link to facilitate student access and understanding. Using Markdown for clear, structured documentation and Git for version control, they updated deadlines and submission requirements to better align with course assessment needs. Their work addressed both English and Chinese language considerations, supporting a diverse user base. The depth of their contribution lay in refining onboarding materials, ensuring students had precise, accessible guidance for project submission and evaluation.