Hanoi’s underground train network moved a step closer after a German-made boring machine to create tunnels under the capital city began work. The underground section of Metro Line 3 is expected to come into operation late next year.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
