A resident receives a nucleic acid test at a testing point in Nangang District of Harbin, northeast China's Heilongjiang Province, Sept. 22, 2021. Harbin, capital of northeast China's Heilongjiang Province, with a population of more than 10 million, launched citywide nucleic acid testing on Tuesday afternoon and plans to complete the campaign by the end of Thursday, the city's COVID-19 prevention and control headquarters said. Heilongjiang Province had reported eight confirmed locally transmitted COVID-19 cases by Wednesday noon, all in Harbin, the provincial health commission said. (Xinhua/Wang Jianwei)