CodexGuide (codexguide.io) is a Chinese-language learning platform dedicated to OpenAI Codex, with 71 continuously maintained articles. Beginners start with what Codex is and who it is for, then choose between the App, CLI, IDE, and Cloud. After that they log in, open a first local project, and make and review a first change. Advanced guides explain how Codex works, how to manage context, and how permissions, sandboxing, and approvals set safety boundaries. Case studies cover practical workflows such as browser end-to-end acceptance testing, the Notion plugin, cross-session collaboration, long-running tasks, reusable skills, and remote control of a Mac. A troubleshooting FAQ covers login, permission, Git, and verification failures. Every guide is task-oriented: understand the request, make the change, verify the result, and iterate. The goal is to help Chinese-speaking developers and knowledge workers use Codex to finish real, checkable work.