As long as you do the following, there will be no danger. The method is as follows:

1. Before deleting him, delete the chat history between you and him, and then go to the friend’s business card Add him to the blacklist, and then delete the friend;

2. Go to Settings-Privacy and turn on friend verification;

3. Go to Settings-General-Clear WeChat storage space and press Prompt to clean up the trash (if the phone is an Android phone, you can also go to the security manager to clean it up, the effect is the same);:

The setting method to prevent strangers from seeing the circle of friends is as follows:

2. On the WeChat main page, select "Settings".

3. In settings, select "Privacy".

4. Just turn off "Allow strangers to view ten photos".