Hundreds of drones light up Seoul sky with Covid-19 messages

Hundreds of drones lit up the night sky in Seoul for a spectacular showcase of motivational and awareness messages as the world battles the coronavirus pandemic.

Three hundred unmanned aerial vehicles were programmed to form images above the Han river -- which runs through the South Korean capital -- for the eyecatching flash mob.

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The show began with messages reminding people of key precautionary measures, including wearing masks, washing hands, and keeping a two-metre distance from others.

The drones created images of a mask surrounded by coronavirus particles, quickly shuffling to form two hands and water droplets against the dark night sky.

The 10-minute show shifted to messages of gratitude for medical personnel in the frontlines of the pandemic as well as all South Koreans for their collective efforts.

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"THANKS TO YOU," the drones wrote in the sky next to a heart shape, then formed a silhouette of the Korean peninsula with the message: "Cheer up, Republic of Korea."

The government-organised event on Saturday night was not advertised in advance in consideration of social distancing rules, the transport ministry said.