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China's alternative to Valentine's Day has turned into the world's biggest shopping event. Last year, Singles Day saw sales worth almost $18bn in 24 hours. Sales online in China have exceeded the two biggest shopping days in the US combined - Black Friday and Cyber Monday. (Photo: A woman holds a balloon as she walks past a store on Chinese Valentine's Day in Beijing on August 28,in 2017. Credit: WANG ZHAO/AFP/Getty Images).
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