The latest update for this custom Android ROM now supports four more Xiaomi handsets and integrates the latest security patch from Google. The list of added features includes multiple UI changes, fixes, as well as always-on scheduling, system-wide app locking, and a new ringtone.
https://www.notebookcheck.net/The-April-update-of-Descendant-XI-comes-with-various-minor-changes-as-well-as-support-for-the-Xiaomi-Mi-9-9-SE-Poco-M2-and-Redmi-K20-Pro-Mi-9T-Pro.532032.0.html