What are the procedures for returning to Zhen 'an from Xi 'an with low risk today?

48 hours of nucleic acid. As of September 12, 2022, people returning from counties (cities, districts and banners) that have never suffered from epidemic situations do not need to provide negative certificates of nucleic acid testing, and a free nucleic acid sampling is conducted at the first pass to enter the market (those who hold negative certificates of nucleic acid testing within 48 hours do not need to carry out landing testing).