5, clean clothes, educate children not to lie indoors, do not pull flowers and plants outdoors. 6. Don't wipe your nose with your sleeves, lick your nose with your mouth, rub your eyes with your hands, and don't pick your nostrils with your fingers. 7. Don't eat food that falls on the ground, don't put toys, pencils, books and other things in your mouth, don't suck your fingers, and don't bite your nails. 8. Don't tamper with other people's cups, towels and tableware, and don't eat other people's leftover food. 9. Wash your hands before and after meals, and wipe your mouth and rinse your mouth after meals.