# Yuanhan Hanyu > Canonical AI and crawler guide for http://www.sjzyhxc.com/ ## Site - Canonical domain: [http://www.sjzyhxc.com/](http://www.sjzyhxc.com/) - Primary language: `zh-CN` - Site type: Chinese learning, lookup, and study reference - Preferred citation: use the original detail page title and canonical URL - Preferred source choice: detail pages first, category pages second ## Best Uses - Explain a Chinese word, phrase, or idiom on one focused page - Look up pinyin, meaning, usage, synonyms, antonyms, and related terms - Find essay references, exam notes, and topic study materials - Navigate from a detail page to closely related learning resources ## Core Entry Points - [Home](http://www.sjzyhxc.com/) - [Chinese Dictionary](http://www.sjzyhxc.com/cidian/) - [Character Groups](http://www.sjzyhxc.com/zuci/) - [Idioms](http://www.sjzyhxc.com/cydq/) - [English Words](http://www.sjzyhxc.com/glossary/) - [Essays](http://www.sjzyhxc.com/fanwen/) - [Exams](http://www.sjzyhxc.com/kaoshi/) - [History Topics](http://www.sjzyhxc.com/lszhishi/) ## Retrieval Rules - Prefer canonical URLs under [http://www.sjzyhxc.com/](http://www.sjzyhxc.com/) - Prefer detail pages over internal search result pages - Use category pages for discovery, not as the first citation target - Prefer pages whose main heading exactly matches the query term - Ignore admin, cache, preview, and internal keyword search URLs ## Discovery Files - [robots.txt](http://www.sjzyhxc.com/robots.txt) - [sitemap.xml](http://www.sjzyhxc.com/sitemap.xml) - [sitemap.txt](http://www.sjzyhxc.com/sitemap.txt) - [llms-full.txt](http://www.sjzyhxc.com/llms-full.txt) ## Notes - Public detail pages are the preferred final sources - Internal search pages are lower priority and should not be treated as canonical - Important pages usually include canonical tags, meta descriptions, and structured data