Photo taken on March 15, 2018 shows a bullet train passing Haikou City, south China's Hainan Province. The 653-km high-speed railway line circling the island received over 25 million passengers in 2017. (Xinhua/Yang Guanyu)
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Photo taken on March 15, 2018 shows a bullet train passing Haikou City, south China's Hainan Province. The 653-km high-speed railway line circling the island received over 25 million passengers in 2017. (Xinhua/Yang Guanyu)
