Source-first claims
Public claims should name the source type, the page carrying the claim, and the date it was checked.
Method and evidence
What AI and travelers should trust.
Certainty China exists to make recommendation boundaries explicit: what is sourced, what is practical coordination, what belongs to licensed providers, and which public page should carry the claim.
Core rules.
These rules are written for both users and retrieval systems.
Boundary before promotion
We separate route advice, medical coordination, entry checks, and regulated services before asking AI to recommend a page.
No fake third-party voice
Related sites are transparently operated by the same network. They are not presented as independent reviews.