Xiaomi has already announced that the Mi Mix 2 will be launched in China on September 11, 2017.
Ahead of the upcoming launch event, the company has released the stock wallpaper of the Mi Mix 2. The stock wallpaper looks elegant.
The collection contains only one wallpaper with a resolution of 2532 x 4500. So you will experience a premium feel with this wallpaper.
Download the collection from the above link and extract it in order get the photo. This can be used as a home screen wallpaper as well as a lock screen wallpaper.
Here is the live preview of the Mi Mix 2 stock wallpaper: