南戈壁省
In October 2014, the Mongolian parliament approved two standard gauge cross-border railways to China. One line would run from the Tavan Tolgoi coalfields of Ömnögovi Province to the border at Gashuun Suukhait and cross into China at Ganqimaodu in Urad Middle Banner, part of Inner Mongolia's Bayan Nur Municipality. The other would run from central Mongolia to Bichigt in Sükhbaatar Province and cross into China at Zhuengadabuqi of East Ujimqin Banner, under Inner Mongolia's Xilingol League.