If I travel to China, does China have all of my iCloud data?
I understand that Apple has built data centers in China. I notice I have access to my icloud photos and notes in China. Therefore If I travel to China, will the icloud data centers sync giving China access to all of my information?
It’s not where you are physically, but the country you set for your iCloud account.
I think you are asking something like, "does Apple voluntarily share my information?" Read some of the articles in [0]. At this point, I think it is pretty safe to assume that most large countries and some large companies can access your iCloud data with limited effort.
[0] https://www.electrospaces.net/