Ice blocks are placed to help cool off as people wait to receive COVID-19 tests outside a testing site at the Hexi compound of the Nanjing First Hospital in Nanjing, east China's Jiangsu Province, July 22, 2021. A total of 13 locally transmitted COVID-19 confirmed cases and nine asymptomatic carriers were reported as of 1 p.m. Thursday in Nanjing after new infections emerged at an airport earlier this week. The city launched an all-inclusive nucleic acid testing campaign Wednesday. (Xinhua/Yang Shaogong)
