Privacy policy

Last updated: July 15, 2026

What we collect

When you unlock downloads, we collect your email address and, optionally, your first name. When you use the contact form, we collect your name, email, and message. We use privacy-friendly analytics that do not use cookies or track you across sites.

How we use it

Your email is added to our mailing list (managed by Mailchimp) so we can send you the resources you requested and occasional updates about new videos and documents. Every email includes an unsubscribe link. We never sell or share your information with third parties for their marketing.

Your rights

You can unsubscribe at any time, and you can request access to or deletion of your data by emailing sen.zhangyiye@gmail.com.

Third-party services

This site uses Mailchimp (email list), Netlify (hosting), and YouTube (video embeds, loaded only when you press play). Each has its own privacy policy governing the data they process.