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Liu Xiang of China is seen before women's 50m freestyle final of swimming at the 18th Asian Games in Jakarta, Indonesia, Aug. 24, 2018. (Xinhua/Yue Yuewei)

Liu Xiang of China is seen before women's 50m freestyle final of swimming at the 18th Asian Games in Jakarta, Indonesia, Aug. 24, 2018. (Xinhua/Yue Yuewei)