Beijing has upgraded its coronavirus emergency response from the third to the second level and authorities have been carrying out mass testings after new infections emerged last Thursday. /CFP

Temporary testing sites were set up in open areas throughout the city. /CFP

Residents lined up for nucleic acid testing under the guidance of community workers and medical staff. /CFP

Workers at a testing site near Beijing Grand View Garden resorted to ice cubes to combat high temperatures, which reached 35 degrees Celsius. /CFP

Beijing's daily testing capacity is now 400,000, a local official said at a press conference on June 17. /CFP