1. People who came to Shaanxi and returned from high-risk areas were quarantined at home for 7 days (the quarantine time was counted from the time when they left high-risk areas), and nucleic acid detection was carried out for 4 times (1, 3, 5 and 7 days).
2. For those who come to Shaanxi and return to Shaanxi in low-risk areas, the inspection measures shall be implemented twice every three days, and the interval between the two nucleic acid tests shall be more than 24 hours.
3. All foreigners returning from Shaanxi Province have to undergo ground inspection.