How to set the theme of HarmonyOS system?

How to set the theme of HarmonyOS system, we need to operate (4 steps). The model of this demonstration is HUAWEINova7pro；; System: HarmonyOS System 2; The following are the detailed steps:

1 Open phone settings

Open the phone settings and click on the desktop and wallpaper;

1. Open phone settings 2 and click on the theme at the top.

You can see the currently set theme and wallpaper, click on the top theme;

2. Click on Theme 3 at the top to select more themes.

Slide to the bottom to select more topics;

3. Choose more themes 4. Enter the theme name in the search box above and apply it.

The page will automatically jump to the theme mall, enter the theme name in the search box above and apply.

4. Enter the theme name in the search box above and apply it.