The rail-laying work of a 4,615-meter-long bridge crossing the Yarlung Zangbo River of Lhasa-Nyingchi railway was completed on Sunday. The Lhasa-Nyingchi railway features complex geological conditions, with a total length of 435 km, 75 percent of which are bridges and tunnels. The construction work began in 2015 and is expected to be completed in 2021. (Xinhua/Chogo) Visit Link: http://en.kangbatv.com/tp/2019-12-02/327237.html