The lock screen wallpaper is unified with the desktop wallpaper and needs to support the wallpaper cached in the cloud storage. That is, the wallpaper is still displayed after the user deletes the wallpaper file.

[Liang-zy]

锁屏界面壁纸跟桌面壁纸统一，需支持云储存中缓存的壁纸。即用户删除壁纸文件后仍然显示该壁纸。