Shenzhen, China: passengers entering Shenzhen by high-speed rail must have a 48 hour nucleic acid detection green code. A1 exit staff is verifying the

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Keywords: 48, a1, acid, asia, china, code, detection, enter, epidemic, exit, green, health, high-speed, hour, men, north, nucleic, passenger, passengers, people, rail, shenzhen, staff, station, tourism, tourists, verify, women