Fireworks show the characters of RIO during the opening ceremony of the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, Aug. 5, 2016. (Xinhua/Lui Siu Wai)

Dancers perform during the opening ceremony of the 2016 Olymics at Maracana Stadium in Rio de Janeiro, Brazil, Aug. 5, 2016. (Xinhua/Liu Dawei)

Dancers perform during the opening ceremony of the 2016 Rio Olympic Games at the Maracana Stadium in Rio de Janeiro, Brazil, Aug. 5, 2016. (Xinhua/Wu Wei)(dh)

The fireworks is seen over Maracana Stadium during the opening ceremony of the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, Aug. 5, 2016. (Xinhua/Lui Siu Wai)

Dancers perform during the opening ceremony of the 31st Summer Olymic Games at the Maracana stadium in Rio de Janeiro, Brazil, Aug. 5, 2016. (Xinhua/Wang Lili)

Photo taken on Aug. 5, 2016 shows the opening ceremony of the 2016 Rio Olympic Games at the Maracana Stadium in Rio de Janeiro, Brazil.(Xinhua/Li Ga)(dh)

Performers take part in the opening ceremony of the 2016 Rio Olympic Games at the Maracana Stadium in Rio de Janeiro, Brazil, Aug. 5, 2016. (Xinhua/Wu Wei)

Brazilian model Gisele Bundchen performs during the opening ceremony of the 2016 Rio Olympic Games at the Maracana Stadium in Rio de Janeiro, Brazil. (Xinhua/Li Ming) (xr)

Photo taken on Aug. 5, 2016 shows the art performance during the opening ceremony of the 2016 Rio Olympic Games at the Maracana Stadium in Rio de Janeiro, Brazil. (Xinhua/Li Ming) (xr)

Artists perform at Maracana Stadium during the opening ceremony of the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, Aug. 5, 2016. (Xinhua/Lui Siu Wai)

 President of the International Olympic Committee Thomas Bach addresses the opening ceremony of the 2016 Rio Olympic Games at Maracana Stadium in Rio de Janeiro, Brazil, Aug. 5, 2016. (Xinhua/Qi Heng)

The Olympic flag is raised during the opening ceremony of the 2016 Olymics at Maracana Stadium in Rio de Janeiro, Brazil, Aug. 5, 2016. (Xinhua/Liu Dawei)

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