No, all people who come (return) to Guangzhou by plane from the city where the middle and high risk areas are located need to undergo nucleic acid testing by the carrier before boarding the plane and show negative proof of nucleic acid testing within 48 hours; After arriving at the ear, another nucleic acid test should be carried out at the airport. The effective start time of 48 hours nucleic acid is based on the time shown in the nucleic acid report; For nucleic acid reports showing both sampling time and detection time, the sampling time shall prevail; If the specific time is not displayed in the nucleic acid test report, the effective time shall be calculated at 0: 00 on the day when the report is displayed.