Winter's morning fog had yet to clear, and the smell of disinfectant already permeated the streets.
By a little past eight o'clock, three epidemic prevention vehicles bearing Red Cross symbols were parked in front of the tubular building.
Personnel in white protective gear were adjusting pulse foggers, the metal nozzles faintly gleaming cold under the morning light.
An open space in front of the building's entrance had been temporarily set up as a testing point.
At this moment, a somewhat chaotic line had already formed.
Several police officers, holding megaphones, moved back and forth, shouting loudly to help maintain order.
Residents of the tubular building, wearing expressions of slight nervousness, stepped out of their homes one after another, joining the queue for the free physical examination.
As the New Year was approaching, there were probably less than a hundred migrant workers still lingering here.
