Privacy Policy 隐私政策

1. Information We Collect 我们收集的信息

When you register for an account, we collect your email address and a securely hashed password. We also collect anonymous usage data to improve our service, including pages visited, features used, and learning progress.

Google AdSense and Google Analytics may set cookies and collect browsing data on our site. Please see section 4 below for details.

2. How We Use Your Information 信息使用方式

To create and manage your account
To track your learning progress and achievements
To improve our platform based on usage patterns
To display relevant advertisements via Google AdSense
To communicate with you regarding your account or feedback

3. Data Retention 数据保留

We retain your account information for as long as your account is active. You may request deletion of your account and associated data by contacting us at sunxi0302@gmail.com.

4. Cookies and Third-Party Services Cookies 和第三方服务

We use the following third-party services that may set cookies or collect data:

Google AdSense — displays advertisements. Uses cookies to serve personalized ads based on your browsing history. You can opt out of personalized advertising at adssettings.google.com.
Google Analytics — analyzes site traffic and usage patterns. Data is anonymized where possible.
Upstash Redis — stores session and progress data securely.
Resend — sends account verification and notification emails.

5. Children's Privacy 儿童隐私

Our service is designed for overseas Chinese children and families. We do not knowingly collect personal information from children under 13 without parental consent. If you believe a child has provided us with personal data, please contact us to have it removed.

6. Your Rights 您的权利

You have the right to access, correct, or delete your personal data at any time. To exercise these rights, please contact us at sunxi0302@gmail.com.

7. Changes to This Policy 政策变更

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated date. Continued use of the platform after changes constitutes acceptance of the new policy.

8. Contact 联系方式

If you have any questions about this Privacy Policy, please contact us at:

Email: sunxi0302@gmail.com