I am the schoolbag with the heavy burden of carrying the students 'books and stationery on my back. Every morning when I carry my schoolbag from home to school, I feel extremely heavy, but I will try my best to put everything into it so that they can have a good learning environment in school. Other than carrying books and stationery, I also had many other missions. I want to protect the students 'books and stationery from damage and ensure that they can use them properly. I also have to protect them from harmful substances such as air pollution and chemical pollution. I also need to help them maintain a balance between their studies and their daily lives so that they can maintain healthy living habits. As a schoolbag, I am very important and I will do my best to help my students succeed in school.