Recently I've created a Taobao account and bound it to my Flyme account. Now when I take a picture a backup in the cloud is automatically done. But there is something I don't understand. If I go to User Center -> Cloud Storage I can see two entries:

- cloud disk
- cloud album

Under Cloud album I have the backup of all my local Pictures. So far so good. When I tap on Cloud disk a new screen appears showing a list with three items:

- cloud album
- a folder labeled with Chinese characters (the folder contains a couple of pictures)
- a PDF document written in Chinesse

Could someone tell me what are the last two items? What is the Cloud disk useful for?

My firmware is FlymeOS 5.6.2.1 beta.