Pay attention to social etiquette
Classification：
Protection
When coughing or sneezing, try to cover your mouth and nose with a tissue or handkerchief; if you don't have one, cover your mouth and nose with your elbow or lapel.
Do not spit.
Socialize and keep a distance of 1 meter.
Take the elevator in groups of people (please wear a mask in the elevator if possible).
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