Why do so many people speak ill of a person behind his back no matter how well he does?

Some words are not convenient to say in person, especially prejudice against people, but you can't express it quickly, so you have to find someone else to say it. I have no objection to this. After all, not everyone can communicate without scruple, and not everyone can accept others' opinions about themselves, especially bad opinions, which makes us have to talk behind our backs. I think it's okay to talk as long as you don't stab others in the back. If someone really slanders or goes too far behind your back, the best solution is to explain it to your face with a smile, because you will know that it is likely that someone else told you secretly! Relax your heart and accept criticism from others, so that no one will choose to talk behind your back!