Rail of Progress: Modern transformation for Mexico City's main metro line

For more: https://www.cgtn.com/video Mexico City's main subway line has undergone a transformation thanks to China's expertise in mass transit solutions. China is providing 29 trains, as well as helping upgrade tracks, signaling systems, and other essential infrastructure on Metro Line 1. Huang Yichang got a close look at preparations for the line to reopen to the public. Subscribe to us on YouTube: https://goo.gl/lP12gA Download our APP on Apple Store (iOS): https://itunes.apple.com/us/app/cctvn... Download our APP on Google Play (Android): https://play.google.com/store/apps/de...