China's Zheng Shuyin (L) competes against Britain's Bianca Walkden during the women's +67kg semifinal of Taekwondo at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 20, 2016. (Xinhua/Han Yuqing)
China's Zheng Shuyin (L) competes against Britain's Bianca Walkden during the women's +67kg semifinal of Taekwondo at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 20, 2016. (Xinhua/Han Yuqing)