Can the printed Yukon code be tested for nucleic acid after 2 days?

Of course. Chongqing, referred to as "Chongqing" or "Mountain City" for short, is a provincial administrative region of China people. According to relevant information, in Chongqing, residents can enter their own information in Yukang code, then generate a QR code, save the screenshot, and just show this screenshot when doing nucleic acid. "Yukangma" is a convenient information system that provides health information declaration, dynamic display of health status, health certificate declaration and other services for migrant workers in Chongqing.