https://techcrunch.com/2018/02/25/apple-is-moving-icloud-encryption-keys-for-chinese-users-to-china/

Apple told Reuters that the company had to comply with Chinese authorities and move iCloud data to Chinese data centers. Not everyone’s data is moving to China. This is only going to apply to residents of mainland China who chose China as their main country when they created their Apple account (not Hong Kong, Macau or Taiwan).

The Chinese government can now ask Apple to decrypt iCloud backups much more easily. Human rights activists are concerned because it could lead to arrests of democracy advocates.