# Page Not Found

The URL `manual-zh/reference/system-collections.html` does not exist.

You might be looking for one of these pages:
- [system.roles集合](https://docs.mongoing.com/security/security-reference/system.rolescollection.md)
- [system.users集合](https://docs.mongoing.com/security/security-reference/system.userscollection.md)
- [MongoDB系统集合](https://docs.mongoing.com/can-kao/sytem-collections.md)
- [封顶集合](https://docs.mongoing.com/mongo-introduction/databases-and-collections/capped-collections.md)
- [db.collection.stats()](https://docs.mongoing.com/can-kao/mongo-shell-methods/collection-methods/db-collection-stats.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.mongoing.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.mongoing.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/security/security-reference/system.rolescollection.md`)
- Use `Accept: text/markdown` header for content negotiation