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China's Gao Xinyu serves during the singles' qualifying match against Natalia Vikhlyantseva of Russia at 2017 WTA Wuhan Open in Wuhan, capital of central China's Hubei Province, on Sept. 22, 2017. Gao lost 0-2.(Xinhua/Xiong Qi)

China's Gao Xinyu serves during the singles' qualifying match against Natalia Vikhlyantseva of Russia at 2017 WTA Wuhan Open in Wuhan, capital of central China's Hubei Province, on Sept. 22, 2017. Gao lost 0-2.(Xinhua/Xiong Qi)