The masks are disposable medical masks, medical surgical masks or above protective level masks. As a reminder, gauze and other cloth masks cannot be used for medical protection. Different types of masks are required for different occasions. When taking public transportation such as buses, subways, coaches and trains, and when in public places with poor ventilation such as shopping malls and theaters, you should wear disposable medical masks or medical surgical masks. If you have fever, cough or other respiratory symptoms, you should wear a medical surgical mask or a protective mask without a breathing valve that meets the KN95/N95 level or above.

When you are in indoor crowded places such as shopping malls, supermarkets, cinemas, venues, exhibition halls, airports, docks and common areas of hotels; when you ride in compartment elevators and public transportation such as airplanes, trains, boats, coaches, subways and buses; when you are in crowded outdoor places such as open squares, theaters and parks; when you are in hospitals for medical consultation or escorting, when you receive temperature tests, check health codes and register trip information You should wear a mask when you are having nasopharyngeal discomfort, coughing, sneezing and fever; and when you are not eating in a restaurant or canteen.