The story begins when I was 16 years old. The first time I met him was on the first day after the shift. He sat in the big group near the door, fourth row. The chemistry teacher suddenly called on him to come up to the stage to write exercises because he saw him writing physics homework below. When he stood up, he twisted his face back and said to the teacher with a smile, "Teacher, I don't know how to solve this question."
Concept: Everyone plays a leading role in his or her own life.