We can add alarm times on the Xiaomi smartphone to wake us up once, daily, from Monday through Friday, or on user-defined days. We can specify if the alarm should vibrate, add a custom label, and set whether the alarm should be deleted after execution.
Alarm times that have not been deleted remain in the overview and can be reactivated at any time with a fingertap.
We can also define a ringtone, which is either selected from the pre-installed tones, or the Weather/Nature Alarm feature, which downloads a matching ringtone for the current weather or natural change, depending on the settings.

Note: In this guide we add an alarm clock, set the nature alarm and a repetition. Other options can be accessed the same way.

Android 10 (MIUI 12.0)
Step 1:  Open the  Clock app
Step 2:  Tap on  Add
Step 3:  Set the  alarm time
Step 4:  Set the  ringtone, repetition  or  vibration
Step 5:  Tap on  Save
  1. Open the Clock app
  2. Tap on Add
  3. Set the alarm time
  4. Set the ringtone, repetition or vibration
  5. Tap on Save

Xiaomi Instructions