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Barbora Krejcikova (R) and Katerina Siniakova of the Czech Republic clap hands during the doubles round robin match against Barbora Strycova of the Czech Republic and Hsieh Su-wei of Chinese Taipei at the WTA finals Tennis Tournament in Shenzhen, south China's Guangdong Province, Oct. 29, 2019. (Xinhua/Liang Xu)