in this tutorial we will change the wallpapers that are installed by default in the deepin operating system
1. first we will go the dde-file-manager and en route, at the top we will paste this /usr/share/wallpapers/deepin
2. we click rights and select the option to open a new tab as administrator user, I have entered our user's password
3. once this is done we have permission to remove or change the system wallpapers
中文 
1. first we will go the dde-file-manager and en route, at the top we will paste this /usr/share/wallpapers/deepin