How to add it back after hertz hacked each other?

Hertz blacked out the other party and added it back: if you just uninstall Hertz's app, then the other party can still send you a message, because uninstalling the app will not affect the use of the account.

Now that it has been untied, you can log in with your mobile phone number, then send a verification code message to log in and reset your password. It is very good and convenient to verify the password when you exit again.

Chat usage:

In QQ chat tools, people you don't like or hate will be blacklisted, referred to as "hacking". The steps of "blackening" are usually as follows:

(1) Click the right mouse button.

(2) Select "Join Blacklist" in the menu.

(3) Click OK to see the person you blacked out in the blacklist column.

"Black screen" is usually more cautious, because black screen usually has the notice of "someone blacklisted you" from the other side, which will make you two ignore each other. It should be noted that there is still a certain difference between extortion and deleting friends.