Xiaomi K40 mobile phone, MIUI/KOOC-0/3.0./KOOC-0/3 system, calendar/KOOC-0/./KOOC-0/6.0 version record.

1. Click the calendar.

2. After entering the calendar, click the plus sign.

3. After entering the information, click Rewind for a few days.

4. After information input is completed, click the check mark.

5. We set it to 10 months later, click the check mark, and then go back to check. Because we just set it up and it hasn't turned into a time number, it will take some time for this, and the countdown date will appear.

Tips: This operation is only applicable to Xiaomi's mobile phone model.