A medical worker collects a swab sample from a resident at a residential community in Jinfeng District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Oct. 21, 2021. Yinchuan reported one new confirmed COVID-19 case on Thursday, according to the local COVID-19 prevention and control headquarters. As of 4 p.m. Thursday, Yinchuan had three confirmed COVID-19 cases. (Xinhua/Feng Kaihua)
