When someone says to you, "How simple is this? You can't even know this? " What is your feeling?

it's unnecessary. if you keep such a small matter in mind, I can hardly believe that you are out of society. The society is cruel in reality. It's true that you can't. People say that you can't. It's just a matter of personal character and quality. Some people clearly say that he loves to trample on people, but what he said is not unreasonable. What you need to do is to study hard and give it to others, instead of finding a place to vent immediately. There is no need for such a trivial matter. How can you achieve great things in the future if you are so petty? I'm sorry, what I said is more realistic and cruel, but this is the real society. I hope you can understand clearly.