Where does WeChat find people who have been blacked out by themselves?

I know this, because I have blacked out all my friends ~ Let me tell you how to check it on your mobile phone ~

Demo mobile phone: glory 9X

Wechat version: 8.0.33

1. Open the mobile phone WeChat, first click Me in the lower right corner, and then click Settings;

2. Enter the settings page, and click the friend permissions;

3. Under the friend permissions, click the blacklist of address book;

4. You can see the person you hacked when you go in.

If you want to remove the blacklist, just click on the other person's avatar to enter and close the blacklist button.