MIUI 12: What’s the gesture to access notifications from the home screen?
By default, Control Center is enabled in MIUI 12.
With Control Center enabled, you can swipe down on the left side of the home screen to access your notifications, and swipe down on the right side of the home screen to open the control center.
Of course, you can disable Control Center if you wish, simply go to Settings - - Display - - Control center & Notifications shade, and turn off “Use new Control center”