English edition and open-access launch
英文版与开放获取上线
- All 33 chapters and the front matter published in English and Chinese.全书 33 章及卷首内容以中英双语出版。
- Released under CC BY 4.0 with a dedicated License page; added full-text site search.以 CC BY 4.0 开放许可发布，新增独立许可页；上线全文站内搜索。
- Machine-readable Markdown mirrors (append .md to any chapter URL) and an llms.txt index for AI engines.面向 AI 引擎的 Markdown 镜像（任意章节 URL 加 .md）与 llms.txt 索引。