How does Xiaomi 3 delete the intercepted spam messages?

Xiaomi 3 deletes the methods/steps of intercepting spam messages:

1: In the mobile phone, find the application "Security Center" and click.

2. Enter the "Security Center" interface and click "Harassment Interception".

3. On the "Harassment Interception" page, you can see the short messages that are usually intercepted by mobile phones.

4: Click to open the information to be deleted.

5: On the SMS content page, press and hold the SMS content with your finger, and a checkmark will appear next to the SMS content. At this time, you will see the following three options, and click "Delete".