Do you know that?/You know what? Our canteen is getting dirtier and dirtier because many students put the leftover food on the table or on the floor. Where do we go when we feel hungry in the morning, at noon or at night? Canteen. That's right. The canteen is where we eat every day, so it is our responsibility to keep it clean. What can we do to change it? Through the suggestion of the student union, we hope that we can form good habits, such as not throwing garbage on the ground and not putting leftover food on the table. Then, we believe that our canteen will be more beautiful and cleaner.