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RIO DE JANEIRO, BRAZIL - AUGUST 17: Shuai Zhao of China celebrates after winning gold over Tawin Hanprab (not pictured) of Thailand in the Taekwondo Men's -58kg contest during Day 12 of the Rio 2016 Olympic Games at Carioca Arena 3 on August 17, 2016 in Rio de Janeiro, Brazil. (Photo by Ryan Pierse/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 17:  Shuai Zhao of China celebrates after winning gold over Tawin Hanprab (not pictured) of Thailand in the Taekwondo Men's -58kg contest during Day 12 of the Rio 2016 Olympic Games at Carioca Arena 3 on August 17, 2016 in Rio de Janeiro, Brazil.  (Photo by Ryan Pierse/Getty Images)