China's Ruili launches second citywide nucleic acid testing

A volunteer guides residents in their registration on mobile phone before receiving nucleic acid testing for COVID-19 at Munao community, Ruili City, southwest China's Yunnan Province, April 6, 2021. Ruili City in southwest China's Yunnan Province on Tuesday launched the second round of nucleic acid testing that includes all residents of the city proper. (Xinhua/Chen Xinbo)