Don't get distracted. Focus Daniel-San! NO not on THOSE, Daniel-San! Observe the surroundings. Daniel-San.
The repeating announcements would drive me crazy, imagine beiing one of those testers in the blue suits...
Take a look at Chinese PCR-testing.
Sourced from Naomi 'SexyCyborg' Wu's Youtube channel from the video "Shenzhen Lockdown and Mass Testing!"