China's Liu Hong competes during the women's 20KM race walk at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 19, 2016. Liu Hong won the gold medal. (Photo: China News Service/Fu Tian)
China's Liu Hong competes during the women's 20KM race walk at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 19, 2016. Liu Hong won the gold medal. (Photo: China News Service/Fu Tian)