About Us

👥 About this site

Project nature

• • This site is a personally maintained free tool project — not operated by a company or a commercial team
• • Independently developed and maintained by an enthusiast who has been engaged in outbound travel and visa processing for a long time
• • The content is compiled with reference to public information from official channels and cross-checked, but this site does not guarantee that all data is absolutely accurate
• • This website does not provide visa agency, intermediary or legal consulting services

Content Methodology

• • Source first: Official channels (embassies and consulates, immigration bureaus, visa centers) > Government portal > Industry associations > Experience review
• • Cross-validation: Key data should be consistent across at least 2 authoritative sources.
• • Timeliness: Each page is marked with a "last updated" date, and outdated information is revised promptly.
• • Error correction: Report errors via Contact us, and we will correct them as soon as possible after verification

Visa policies may be adjusted at any time, and the information on any page may be out of date. Please be sure to refer to the latest announcements from official agencies before traveling.

🛠️ Tool introduction

Different from the official system of embassies and consulates, this tool focuses on quantitative calculation of visa stay days — enter entry and exit history records to automatically calculate the compliance status, remaining quota and plan verification results under dual quotas (180-day cycle/365-day cycle).

Core functions

• • Fixed period calculation: Taking the first entry date as the starting point of the cycle, every 180-day period is ≤90 days, every 365-day period is ≤180 days, and the quota is automatically reset at the end of the period.
• • Double quota simultaneous verification: The 180-day cycle and the 365-day cycle are judged independently. If either exceeds the limit, it will be deemed to be overdue.
• • Plan verification: Enter the intended entry date, and automatically calculate the latest legal departure date, including cross-period quota reset
• • Runs entirely locally: Itinerary data is only saved locally in the browser, not uploaded to any server, no tracking, no cookies
• • Pure static deployment: No backend, no tracking scripts, fast loading, privacy friendly

📐 Algorithm Caliber

This site uses the fixed-period system: take the first entry date as the starting point of the cycle. The 180-day cycle is ≤90 days, and the 365-day cycle is ≤180 days. The quota is automatically reset at the end of the cycle. Different countries/visa types may adopt different calibers (rolling window, natural year, etc.), please refer to Rule description and Comparison of rules across countries.

📊 Data source description

The rules follow common visa stay-limit policies. Data sources include: official websites of embassies and consulates of various countries in China, announcements from visa centers, and China Consular Service Network (cs.mfa.gov.cn). For specific travel decisions, please refer to the official agency.

Source type and priority

priority	Source type	Example
P1	Official website of the embassy or consulate/immigration bureau of the destination country in China	diplo.de, gov.uk, canada.ca
P1	Chinese official channels	China Consular Service Network cs.mfa.gov.cn, Ministry of Foreign Affairs
P2	Visa center operator	VFS Global, TLScontact, China-Chile Visa
P3	International Organization/Industry Report	European Commission, IATA, industry association statistics
refer to	Experience review	Anonymized case database (for reference only, not policy-based)

Each country detail page is labeled with the specific source link used on that page. Policy data always follows the official source text.

🔄 Update mechanism

Update commitment

• • Timely updates when policy changes are discovered: After the official announcement is released, the corresponding content will be updated as soon as possible and the "last updated" date will be refreshed.
• • Regular verification: Check and revise site-wide rules and data from time to time, and prioritize outdated information reported by users.
• • Changes are traceable: The page timestamp will be revised for each update, and important policy changes will be prompted separately.

📧 Contact us