At present, major railway stations no longer check nucleic acid negative certificates, and low-risk areas do not need to check nucleic acid test certificates. As long as passengers can buy tickets through official channels, they don't need to hold a nucleic acid test certificate when entering the station. Wash your hands frequently. Proper hand washing is one of the most effective measures to prevent respiratory tract infection. It is recommended to wash your hands thoroughly with soap and water. Wash your hands with soap or hand sanitizer and tap water, and wipe your hands with disposable paper towels or clean towels.
Maintain good respiratory hygiene habits. When coughing or sneezing, cover your mouth and nose with paper towels and towels. Wash your hands after coughing or sneezing, and avoid touching your eyes, nose or mouth. Keep the environment clean and ventilated. Open the window for ventilation several times a day, not less than three times, each time for 20 ~ 30 minutes. When the outdoor air quality is poor, the number and time of air exchange should be reduced appropriately. Minimize activities in crowded places and avoid contact with patients with respiratory infections.