Supermarkets are relatively crowded, so when entering or leaving your home or going to the supermarket, you should pay attention to protection: 1. Basic protection: wear a medical surgical mask and try to keep a distance from people; 2. Coughing and sneezing: use a tissue or sleeve or bend your elbow to cover your nose completely, throw the used tissue into the closed bin immediately, wash your hands with soap and water or disinfectant products containing alcohol; 3. Active space: try not to go to markets that sell live animals and avoid unprotected contact with livestock or live birds. 4. Return home: Wash hands promptly with soap and water or alcohol-based disinfectant products.