In 3 minutes: How China builds a high-speed railway tunnel

[dexter]

A 3-minute video on how to build a high-speed rail tunnel has gone viral on Chinese social media. The how-to was released by the China Railway Construction Corporation Limited (CRCC), a state-owned enterprise that ranked 58th among the Fortune Global 500 in 2017.

 

[Georg]

this is how China builds tunnels