How to change the background of the peaceful elite?

Ways to change the background of peaceful elites:

Tools/materials: iPhone 12, IOS 14.6, Peace Elite 3.0.

1. Open the warehouse in the lobby first.

2. After opening the warehouse, click the penultimate combat readiness on the far right.

3. Then click the icon like a photo album in the combat readiness.

4. After clicking, you can see the theme background you have and choose the theme background you want to change.

5. After selection, click the cross in the upper right corner to close the position.

6. After the warehouse is closed, you can see that the theme background of the hall has changed.