The Dali–Ruili Railway or Darui Railway (simplified Chinese: 大瑞铁路; traditional Chinese: 大瑞鐵路; pinyin: dàruì tiělù), is a railroad under construction in Yunnan Province of Southwest China. The line is slated to run 336.387 km (209 mi) from Dali in central Yunnan to Ruili in southwestern Yunnan on the border with Myanmar.[1][2] The line traverses rugged terrain, and bridges and tunnels will account for 75% of the total track length, including a 36-km tunnel through the Gaoligong Mountains.[1] Construction began in May 2011 and is scheduled to take six years.[1][2] Cities and towns along route include Dali, Yangbi Yi Autonomous County, Yongping County, Baoshan, Mang City and Ruili.