China's Liu Hong (C) prepares prior to 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. (Xinhua/Shen Bohan)
China's Liu Hong (C) prepares prior to 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. (Xinhua/Shen Bohan)
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