Passengers wearing face masks are seen at the main train station in Frankfurt, Germany, on Aug. 29, 2020. Germany's COVID-19 cases have risen by 1,479 to 240,986, the Robert Koch Institute (RKI) said on Saturday. (Photo by Kevin Voigt/Xinhua)

A security member wearing a face mask is seen at the main train station in Frankfurt, Germany, on Aug. 29, 2020. Germany's COVID-19 cases have risen by 1,479 to 240,986, the Robert Koch Institute (RKI) said on Saturday. (Photo by Kevin Voigt/Xinhua)

A passenger wearing a face mask is seen at the main train station in Frankfurt, Germany, on Aug. 29, 2020. Germany's COVID-19 cases have risen by 1,479 to 240,986, the Robert Koch Institute (RKI) said on Saturday. (Photo by Kevin Voigt/Xinhua)

People wearing face masks are seen at the main train station in Frankfurt, Germany, on Aug. 29, 2020. Germany's COVID-19 cases have risen by 1,479 to 240,986, the Robert Koch Institute (RKI) said on Saturday. (Photo by Kevin Voigt/Xinhua)

Security members wearing face masks are seen at the main train station in Frankfurt, Germany, on Aug. 29, 2020. Germany's COVID-19 cases have risen by 1,479 to 240,986, the Robert Koch Institute (RKI) said on Saturday. (Photo by Kevin Voigt/Xinhua)

A man wearing a face mask wheels a bicycle at the main train station in Frankfurt, Germany, on Aug. 29, 2020. Germany's COVID-19 cases have risen by 1,479 to 240,986, the Robert Koch Institute (RKI) said on Saturday. (Photo by Kevin Voigt/Xinhua)

A worker wearing a face mask drives a vehicle at the main train station in Frankfurt, Germany, on Aug. 29, 2020. Germany's COVID-19 cases have risen by 1,479 to 240,986, the Robert Koch Institute (RKI) said on Saturday. (Photo by Kevin Voigt/Xinhua)