Personnel entering (returning to) Beijing must hold the negative certificate of nucleic acid test within 48 hours and the green code of "Beijing Health Treasure". Within 14 days, the number of counties (cities, districts and banners) infected in COVID-19 exceeds 1 case (including 1 case), and it is strictly restricted to enter (return to) Beijing. Civil aviation, railways and highways will strengthen long-distance boarding and inspection at checkpoints in Beijing. Commuters around Beijing must hold negative nucleic acid test certificates within 48 hours when they enter (return to) Beijing for the first time after the implementation of this measure, and they must hold negative nucleic acid test certificates within 14 days every time they enter (return to) Beijing. Please make preparations in advance, arrange the itinerary reasonably and cooperate with the inspection work for friends who have plans to enter (return to) Beijing.