QINGDAO: The Construction of the longest undersea subway tunnel in China was completed in Qingdao, a coastal city in Shandong Province. The local government announced it as a success story on Monday (Jan 20).
The 5.4-km-long tunnel, between the stations of Dayang and Qingdao North, is part of the Subway Line No. 8 project in Qingdao.
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