It is common for college students to bow their heads and play with their mobile phones in class. How can I put it? On the one hand, some teachers in universities are a little old-fashioned in class, which can't attract students' attention, while various games, novels and videos on mobile phones are more attractive to young students. On the other hand, students' self-control ability is too poor to pay attention to learning efficiency and cherish learning opportunities. When I was in middle school, my teacher often said that as long as you study hard, you will be liberated after entering the university. So many students get good grades in middle school, but they can't do it in college, because everyone thinks that going to college can guarantee you, and they don't realize the importance of college at all. Many students' college life is wasted, and their knowledge has not been further deepened, but sometimes they are not as rich as high school. Maybe it has something to do with the education system in our country.