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23:02, 28-Apr-2020
'One of China's hardest tunnel projects' completed after 12 years
Updated
07:57, 29-Apr-2020
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The Dazhu Mountain Railway Tunnel, dubbed as "one of China's hardest tunnel projects," was completed on Tuesday after 12 years of work.
The tunnel is a key part of a railway that connects Dali City and Ruili City in southwest China's Yunnan Province.