1. Open the setting application of miui 14 mobile phone.

2. Find and click the "wallpaper" or "theme" option.

3. In the wallpaper or theme setting interface, browse the available themes and wallpaper options.

4. Find and choose a transparent or translucent theme or wallpaper.

If the transparent calendar option is not found in the system settings, you can download a third-party transparent calendar application.