How does Win10 change the desktop background, themes, and screen lock interface? How does win10 screen lock?

How does Win10 change the desktop background, themes, and screen lock interface? How does win10 screen lock?

Change the desktop background of win10, change the theme of Win10, and change the screen lock interface of Win10.

Click Start and then set;

Click "personalization ";

Click Browse in the background;

Select your desired image and set it to the new background;

Click topic, and then click topic settings;

Select a favorite topic and click Save topic;

Click the screen lock interface, and then click browse;

Select the desired image and set it to the new screen lock page.