Youtube links for Chinese users

I have an app with a Youtube library, which lets the user see the videos inside the app using the Youtube URLs. My problem is that with Chinese users, Youtube is blocked. I can upload the videos to a Chinese provider like Tencent, but the I do not know how to determine that the user is in China, as I do not want to ask for his location. I also thought of using Localization strings and use different URLs for English and Chinese, but the issue is that if a user is in China and his phone is defined to be in English, I may have a conflict there.

So basically my question is: Is there a way, in iOS, to determine whether a user is in China or not without asking for his location?