C87 The Problems of the Head Teacher

"Student Qin Feng, please correct your attitude. Don't think that you can be arrogant just because you did well in the exam." The teacher was very angry at Qin Feng's words, what did he mean by 'it's that simple?' and what did he mean by 'it doesn't have to be learned'. Originally, the teacher wanted to settle the matter so that no one would question him about it