The steps to wear a mask correctly are as follows:

1. Before wearing a mask, wash your hands first to ensure that your hands are clean;

2. Observe the mask, spread the mask flat, determine the front and back of the mask, and judge the inner and outer layers by the folded layer of the mask, and the outward side of the folded layer is the outer layer of the mask;

3. Push your hands to your face, and pinch the nose clip to make the mask close to your face;

4. Hold the mask with the left hand and wrap the protective rope around the ear root with the right hand;

5. Hold the mask with your right hand, and wrap the protective rope around the ear root with your left hand;

6. Pull down the edge of the mouth with both hands to cover it to the eyes and chin.

The situation or scene in which a mask should be worn:

1. During the positive period of novel coronavirus antigen or nucleic acid test.

2. During the suspected symptoms of novel coronavirus infection such as fever, sore throat, cough, runny nose, muscle aches and fatigue.

3. When a cluster epidemic occurs in the community or school where you live, work or study.

4. When visiting a medical institution for medical treatment, accompanying, accompanying or visiting.

5. When migrants enter places where vulnerable people are concentrated, such as pension institutions and social welfare institutions.

6. During the working hours of public service personnel such as medical care, catering, cleaning and security in key institutions such as pension institutions, social welfare institutions and child care institutions, schools and off-campus training institutions.