Visa application tips 签证办理
To ensure a smooth process, apply for your visa as early as possible (at least 1–2 months before travel). Rules and processing times vary by country, so check your local Chinese embassy/consulate for specifics.
1. Visa Types for Conference Attendees
Tourist Visa ("L") • Recommended for Most Attendees
- No invitation letter required (simplest and most recommended).
- Validity: 30 days up to 10 years (based on nationality and consulate approval).
- Fees: 60–140 USD (varies by nationality and processing type).
- Tip: Multi-entry L visas (1-year / 5-year / 10-year) are available for eligible countries including the US, Canada, EU members, etc.
Business/Academic Visa ("M" / "F")
- Required for speakers with remuneration, paid academic services, or official institutional activities.
- An official invitation letter from the conference organizer may be required.
- Note: L visa is still preferred for general attendance without paid duties.
Other Visas • Not Recommended
- Student Visa ("X"): For long-term study only.
- Work Visa ("Z"): Requires full employment sponsorship.
2. Key Application Requirements
- Valid passport (minimum 6 months validity remaining).
- Completed visa application form and recent standard passport photo.
- Round-trip flight itinerary + hotel booking confirmation in Chengdu.
- Invitation letter: Only required for M/F visa applicants (available upon request).
- Health declaration: All COVID-19 testing and quarantine requirements have been lifted.
3. Where to Apply
- Local Chinese embassy or consulate in your country/region.
- Authorized visa agencies for assisted or remote submission.
- China eVisa Pilot: Online application available for selected countries and regions (check official updates).
4. Latest Policy Updates (2025–2026)
- Tourist L visas have fully resumed normal services with multi-entry options widely issued.
- Express processing (3–5 working days) available at most embassies for urgent applications.
- Long-term visas (5–10 years) remain valid for citizens of the US, Canada, UK, EU, and other reciprocal countries.
5. Important Tips
- Verify your visa type, duration of stay, and entry count (single / double / multiple).
- Hong Kong and Macau SARs maintain independent entry policies; a Chinese mainland visa is not required for stays only in HK/Macau.
- For the most up-to-date policies, contact your local Chinese embassy or official visa service platforms.
INVITATION LETTER ISAI 邀请信
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Dear Participants,
To request an official invitation letter for the 6th International Symposium on Artificial Intelligence (ISAI 2027), please follow these guidelines:
1. Issuance of Invitation Letter
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The invitation letter will be issued only after successful registration and payment.
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Requests must include:
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Full name (as printed on your passport)
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Passport number and nationality
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Affiliation (university/company) and mailing address
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2. Passport Name Accuracy
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Your name on the invitation letter must match your passport exactly. Discrepancies may cause visa delays or denial.
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Minor errors (e.g., missing middle names) will require re-issuance with a processing fee.
3. Visa Application Disclaimer
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ISAI 2027 provides invitation letters solely to assist with visa applications.
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The conference cannot intervene in visa decisions made by embassies or Ministries of Foreign Affairs.
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No refunds will be issued if a visa is denied.
4. Timeline & Early Registration
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Visa processing times vary by country. Register early to avoid delays.
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Invitation letters are typically emailed within 5 business days after registration.
For assistance, contact: isai_conf@163.com
We look forward to your participation in ISAI 2027!
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ISAI 2027 Organizing Committee

