'We arrived clean, we leave clean.'

As Typhoon #Bavi hit the coastal city of Hangzhou, more than 3,000 construction workers and migrant laborers were evacuated to the Expo Center, which was converted into an emergency shelter. When authorities gave the all-clear, the evacuees didn't simply leave – they swept the floors, folded their bedding, collected every bag of rubbish and left the shelter spotless. More than 3,000 people stayed there. Not a single wrapper was left behind. #FrontlineStory

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