Speaking under the national flag 1, classroom and dormitory have insight into all windows for ventilation. When we enter the classroom, we should get into the habit. The first thing to do is to open the windows and let fresh air into the room, which will bring you a refreshing day. 2. Pay attention to personal hygiene. Wash your hands thoroughly before and after meals, sneezing, coughing and cleaning your nose, and when you come back from art class. And you should cut your nails, take a bath, change clothes and dry clothes frequently. 3. Strengthen exercise and enhance immunity. In spring, the metabolism of various organs, tissues and cells of the human body begins to flourish, which is a good time for exercise, so we should make rational use of early exercise. 4. Pay attention to the details of clothes and food. In spring, the climate is changeable, and it is warm and cold at first sight. If clothes are suddenly reduced, it is easy to reduce the immunity of human respiratory tract and make pathogens easily invade. Clothes must be increased or decreased in time according to the weather changes, and it must not be reduced too much at once. 5. Developing good hygiene habits is the key to prevent infectious diseases in spring. Finally, islanders should develop good hygiene habits, prevent diseases and ensure their health!