Tibet's first bullet train started operation just one month ago – a milestone moment for China, which now has high-speed rail in all mainland provinces. As the first electrified railway ever built in the high plateau region, the Lhasa-Nyingchi line passes through 47 tunnels and across 121 bridges, and crosses the Yarlung Zangbo River 16 times. Follow CGTN reporter Nicole Ng to experience the newly opened rail route and see the difficulties in constructing this line.