Kong Ning wears a wedding dress decorated with 999 face masks for her performance art work 'Marry the blue sky' as she poses for a photograph in front of the China Central Television (CCTV) Headquarters on a hazy day in Beijing November 19, 2014. Wearing a 10 meter-long wedding dress decorated with face masks is a part of Kong Ning's performance art work which signifies her frustration with air pollution. REUTERS/Kim Kyung-Hoon (CHINA - Tags: POLITICS SOCIETY ENVIRONMENT BUSINESS TPX IMAGES OF THE DAY)

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