Xi'an-Shiyan high-speed railway in Qinling Mountains construction continue. 3rd Sub-division of  Xi Shi Railway of the China Railway 12th Bureau work for construction.

Yuanling Tunnel is longest tunnel on Xi'an-Shiyan high-speed railway line. Yuanling Tunnel is total 13,117 meter. It is key control project during construction. Project also has Qinchu Tunnel.

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