

On the morning of May 9, China's first subway tunnel crossing the Yellow River proceeded smoothly. The tunnel is part of Subway Line 1 in Lanzhou, the capital city of northern China's Gansu province. This success paves the way for the completion of the whole tunnel by the end of this year, Xinhua News Agency reported.
The whole subway tunnel is 2,119 meters long, and the section that crosses the Yellow River is 317 meters long. The tunnel’s depth ranges from a maximum of 36.5 meters to just 19.5.
The project was previously pronounced a "world-class problem" by Qian Qihu, a tunnel expert and fellow researcher at the Chinese Academy of Engineering.

Day|Week
China's first intelligent security robot debuts in Chongqing
A Total of 3,552 Subscribers Vanish In Two Days; YouTube Closes All Doors to Users’ Inquiries
Out of this world! Futuristic UFO-shaped yacht has its own garden and a stunning underwater viewing deck
An old tea house in Chengdu
Furious Customer Crushes All the Buns from Vendor Just Because He Was Given the Wrong Flavor
20 post-90s couples hold ’naked marriage‘ in E. China
Female official wearing traditional Han costume to promote local tourism
Over 12,000 Runners Seek Medical Care in S China’s Marathon
Six Luxury Sports Cars Totaled after Fail Attempts to Cross China’s Most Perilous Highway Linking SW China’s Sichuan and Tibet
Incredible Transformation: “Witch Child”Whose Parents Left Him for Dead in Nigerian Makes Speedy Recovery