XIAMEN, Jan. 29, 2016 (Xinhua) -- Photo taken on Jan. 29, 2016 shows the launching site of the shield tunneling machine for Line 2 of the rail transit system in Xiamen, southeast China's Fujian Province. A section of Line 2 of Xiamen rail transit system will become China's first submarine metro shield tunnel. The sheild tunneling for Line 2 kicked off here Friday. (Xinhua/Wei Mianfeng)
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