It's no secret that the relationship between Apple and China hasn't always been the best. From the banning of its products for government use, to the Chinese state media wanting the Cupertino company "severely punished" for NSA spying, these cases are well-documented. That said, China's consumer market is extremely important to Apple -- which isn't really surprising, given the sheer magnitude of it. But now, with a number of new iDevices hitting shelves there of late, Apple's had to look to servers located in mainland China to store Chinese users' personal data. As Reuters notes, this is the first time the company has begun storing this type of data in that country -- Apple says the decision was made as part of a plan to improve the overall performance of its cloud service, iCloud.