SEOUL: Three hundred drones took to the evening sky over the Han River in South Korea to dispense coronavirus prevention advice through a synchronised light display featuring images of hand-washing and social distancing.
A horde of pin-point lights lifted into the air in military-like formation on July 4 before rearranging themselves to form the image of a white face mask, with red circles symbolising the new virus which has led to almost 300 deaths in the country.
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