According to the relevant information, Cixi Aegean Sea needs 48 hours of nucleic acid. According to the local regulations on epidemic prevention and control in Cixi, it is known that people who come from low-risk areas outside the city should report to the village (community), the employer or the hotel (hotel) in advance with a 48-hour negative nucleic acid certificate, and fill in the "code of admission", and consciously cooperate with the implementation of various prevention and control measures such as detecting nucleic acid for three times on the first, second and third day after arriving in Cixi. Those who fail to carry out nucleic acid testing within the specified time will be given a "yellow code". For specific information, please pay attention to the official website and get first-hand authoritative information.