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A bullet train enters the Qingsheng Station of the Guangzhou-Shenzhen-Hong Kong Express Rail Link in Guangzhou, capital of south China's Guangdong Province, Dec. 14, 2017. (Xinhua/Lu Hanxin)
A bullet train enters the Qingsheng Station of the Guangzhou-Shenzhen-Hong Kong Express Rail Link in Guangzhou, capital of south China's Guangdong Province, Dec. 14, 2017. (Xinhua/Lu Hanxin)