An aerial drone photo taken on Nov. 10, 2024 shows the installation site of box girders of a high-speed railway linking Shanghai, Nanjing of Jiangsu Province and Hefei of Anhui Province in east China. The railway is part of China's high-speed rail network that centers around eight main vertical lines linking the north and south and eight horizontal lines connecting the east and west. (Photo by Zhang Biying/Xinhua)

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