On 28th May, new Zhonglan Railway(Ningxia section)Tiaoshigou tunnel successful breakthrough made by China railway construction bridge engineering bureau. Tiaoshigou tunnel, located in xiangshan township, shapotou district, zhongwei city, Ningxia Hui autonomous region, is the first tunnel of the new Zhonglan railway line, which lays a solid foundation for the completion of the whole line in 2022.
