What to do if the notification sounds still exist after turning on the Do not disturb mode on the Xiaomi smartphone?

The Xiaomi smartphone supports the function of Do not disturb, which can prevent calls, messages, and notifications from disturbing you during meetings, events, or personal time. You can concentrate better on tasks or activities without distractions, improving productivity. Besides, enabling Do not disturb at night helps ensure uninterrupted sleep by silencing notifications and calls.
If he notification sounds still exist after turning on the Do not disturb mode, please refer to the following methods to troubleshoot:
1. This problem will happen if the phone settings have excluded specific APP from the Do Not Disturb mode, or that APP has separate notification settings;
2. If you enable [Only when device is locked], the Do not disturb mode will close when your phone unlocked;
3. If you schedule turn on time of the Do not disturb mode, it will not take effect outside of scheduled time;
4. If you enable [Notify about repeated calls], the phone will ring or vibrate while receiving the second call from the same contact within 15 minutes;
5. If the above troubleshooting steps cannot solve the problem, please submit feedback