Joke Collection Website - Public benefit messages - The other party's Apple phone hacked my number. Can he receive the message I sent?

The other party's Apple phone hacked my number. Can he receive the message I sent?

I can't get it. Take Apple 5S as an example.

Select a contact in Apple's phone address book, and then select "Block this calling number". Select "Block Contact" to add this contact to the blacklist, and you will not receive calls, messages or Face Time calls from blacklisted contacts, as shown below: