Worked on establishing the foundational scaffolding for the HWTeng-Teaching/202502-Statistics-II repository, focusing on repository hygiene and future maintainability. Delivered a placeholder README.md to support documentation-led development and removed an obsolete directory to streamline the project structure. Emphasized clean Git workflows with concise, traceable commits, ensuring that future contributors can onboard efficiently. Utilized Git and Markdown to manage repository content and documentation, prioritizing clarity and readiness for collaborative work. No major bug fixes were addressed during this period, as the primary objective was to prepare the codebase for upcoming features and facilitate a smooth transition to documentation-driven development.