A closed restaurant kitchen can be used without masks. According to the relevant public information, the inquiry deadline is 65438+February 65438+June 2022: effective ventilation is guaranteed, and workers in the operation post do not need to wear masks when keeping a safe distance above 1 meter. In supermarkets, shopping malls, restaurants, exhibition halls/museums, gymnasiums/gymnasiums and other places, the public need to carry disposable medical masks or surgical masks with them. When there are no people gathering, good ventilation and the social safety distance is greater than 1 m, they can not wear masks.