A staff member (L) talks with a visitor at the booth of TP-Link during the 2020 IFA fair in Berlin, capital of Germany, Sept. 3, 2020. The technology trade fair IFA kicked off here on Thursday in a scaled-back format due to the ongoing coronavirus crisis. (Xinhua/Shan Yuqi)

Photo taken on Sept. 3, 2020 shows the entrance of the 2020 IFA fair in Berlin, capital of Germany. The technology trade fair IFA kicked off here on Thursday in a scaled-back format due to the ongoing coronavirus crisis. (Xinhua/Shan Yuqi)

Photo taken on Sept. 3, 2020 shows a hand sanitizer and a visitor quantity indicator outside an exhibition hall of the 2020 IFA fair in Berlin, capital of Germany. The technology trade fair IFA kicked off here on Thursday in a scaled-back format due to the ongoing coronavirus crisis. (Xinhua/Shan Yuqi)

A visitor (L) wearing a face mask tries the displayed cellphone and laptop at the booth of Huawei during the 2020 IFA fair in Berlin, capital of Germany, Sept. 3, 2020. The technology trade fair IFA kicked off here on Thursday in a scaled-back format due to the ongoing coronavirus crisis. (Xinhua/Shan Yuqi)

People wearing face masks visit the booth of Fitbit during the 2020 IFA fair in Berlin, capital of Germany, Sept. 3, 2020. The technology trade fair IFA kicked off here on Thursday in a scaled-back format due to the ongoing coronavirus crisis. (Xinhua/Shan Yuqi)