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Japan's Hirooki Arai celebrates after winning men's 50km competition at the IAAF World Race Walking Team Championships Taicang 2018 in Taicang, east China's Jiangsu Province, May 5, 2018.(Xinhua/Ji Chunpeng)
Japan's Hirooki Arai celebrates after winning men's 50km competition at the IAAF World Race Walking Team Championships Taicang 2018 in Taicang, east China's Jiangsu Province, May 5, 2018.(Xinhua/Ji Chunpeng)