Combination photo shows people receiving nucleic acid tests on the playground of Wujiashan No.1 Primary School on May 15, 2020 (up) and pupils doing exercises at the same playground at Dongxihu District in Wuhan, capital of central China's Hubei Province on April 6, 2021. One year after Wuhan lifted its 76-day lockdown to curb the spread of novel coronavirus, the streets of Wuhan are again bustling. Shopping blocks, pedestrian streets and restaurants are crowded with people. (Xinhua/Xiao Yijiu)
