Custom AOD Theme

[Hotter]

Hi, I have noticed that in MIUI 13 Theme app there are Always On Display themes. The question is how do I make my custom AOD theme?
I want to display AOD (for example time) only if I have notifications.

 

[Igor Eisberg]

Uh well, get an MTZ of one of them, extract it (MTZ = ZIP), and learn how it's built.