A medical worker registers the personal information of a resident with mobility problem at her residence during the latest COVID-19 outbreak in Yinchuan, northwest China's Ningxia Hui Autonomous Region, Oct. 23, 2021. Thousands of medical workers are on duty around the clock at more than 500 sampling sites in key districts of Yinchuan to conduct the test. (Xinhua/Feng Kaihua)
