中风险material_rules
Travel.State.Gov separates required documentation from additional documentation that may be requested; do not turn financial, employment, family ties, itinerary or invitation materials into a fixed mandatory checklist.
Use required only for passport, DS-160 confirmation, fee receipt, photo/printed-photo trigger, and China appointment confirmation. Label purpose/ties/finance as supporting evidence.
中风险faq_and_templates
Visitor Visa page says invitation letter or Affidavit of Support is not needed and is not an issuance factor.
Do not recommend invitation letter template by default. If user insists, show as optional user-supplied context with clear disclaimer.
中风险timeline_rules
Travel.State.Gov says there is no guarantee of visa issuance and not to make final travel plans or buy tickets until the visa is received.
Timeline and templates should suggest tentative itinerary only; avoid advising nonrefundable bookings before visa issuance.
中风险official_links_core
User requested USTravelDocs/AIS China; USTravelDocs public pages are available, AIS China URL returned 403, and Embassy search snippets mention usvisascheduling support address.
Main agent should verify active China login and appointment URL before merging any appointment-service CTA.