Xiadaokou has never had a car in Hebei Province, so it is necessary to hold a nucleic acid certificate within 48 hours to check the health code and travel code. Outsiders who entered the Tang Dynasty have 48 hours of nucleic acid, and they also need on-site nucleic acid, so they can pass it when they are finished. In the middle and high risk area, the cells where the yellow code and the red code are located will be connected to make the next nucleic acid. Those who don't answer will be advised to quit.
Always pay attention to epidemic prevention and control measures. Policies change in real time. If you are not sure, you can call the local government to avoid affecting the trip.