Wearing a mask is an important means of preventing novel coronavirus infection, and everyone should wear a mask on necessary occasions to protect themselves. If it is a more open outdoor place, such as parks, squares, etc., where there are no other people on the road, you can take off your mask for the time being. Once there are other people around, you should immediately put on a mask and keep your distance. If you are driving on the road and there are no people from the infected area or suspected patients in the car, you may also not wear a mask. If you are in a public place with many stores or households on both sides of the road, wear a mask even if there are no other people traveling with you along the way.