Song Jiache changed the wallpaper, and it was gone after restarting.

1. First, slide down the car home screen to pop up the menu bar, click the settings icon in the upper right corner, and click the desktop and wallpaper buttons in the pop-up page.

2. Secondly, click the theme button to enter the theme page, and click the wallpaper button.

3. Finally, you can find all the wallpapers used before the phone is restarted on the wallpaper, and find the wallpaper application.