How the world's highest railway brings people together

Lhasa is the capital of southwest China's Xizang Autonomous Region and the final stop of the 1,900-kilometer-long Qinghai-Xizang Railway. Over the past two decades, its population has nearly doubled to almost a million. In this episode of CGTN's special series, Beyond the Tracks, we find out how people have made Lhasa their home, thanks to the railway.