Blackout the other party. What does the other party send a message to show?

a red exclamation point will be displayed.

If a friend chats with you and is sent by the blackmailer after blackmailing, you will find a message prompting the other party to refuse. The message is displayed with a red exclamation mark.

after blacking out friends, the friendship between the two people has not actually been lifted, and both parties still exist in each other's WeChat address book. However, the message sent by the blacked-out person will be rejected by the other party, that is, the other party can't see the message sent by the blacked-out person, but can only see the prompt.

the list blacklisted by wechat can be found in Settings-Privacy-Address Book Blacklist, and blacklisted people can also be deleted here.