I don't know from which place you come to Shenyang, come to Shenyang to get off the train must scan the communication big data trip code, if it shows that the communication big data trip code is green, and never been to the medium-high risk areas, then you don't need to do the nucleic acid test. If it shows that the communication big data trip code is green, but it shows that you have been to a medium-high risk area, then you must do a nucleic acid test to get off the train in Shenyang. If you are from the high-risk areas to Shenyang, then you get off the train is necessary to do nucleic acid testing, and also have to be mandatory isolation, this point should be noted.