Advertisement01:04VideoChinaChinese workers take just 3.5 hours to lay part of high-speed railwayJade LiPublished: 4:30pm, 17 Jul 2018Updated: 12:06pm, 18 Jul 2018More than 500 workers in China managed to lay part of new high-speed railway line in just 3.5 hours. AdvertisementAdvertisementSelect VoiceSelect Speed0.8x0.9x1.0x1.1x1.2x1.5x1.75x00:0000:001.00x