This repository is a Chinese translation and adaptation of the 'CCNA in 60 Days' study guide, organized as an mdBook static site with a companion Tauri desktop application. The primary content consists of 60 daily lessons covering Cisco CCNA exam topics (routing, switching, security, WAN, etc.), each with theory, configuration examples, review questions, and hands-on labs. The desktop app (src-tauri/) provides offline reading, bookmarking, reading progress tracking, and an LLM assistant (Anthropic Claude) for answering questions about the material. The project is hybrid: the vast majority of the repository is documentation, but it also includes a functional application wrapper with CI/CD. While the educational content is thorough and well-structured, the application components are minimal and tightly coupled to the mdBook ecosystem. The repository appears to have been abandoned (last commit with a future date indicates likely clock skew or repository corruption; no recent activity).