The first tunnel over 8 kilometers of the Yu'an high-speed railway has been successfully completed.

On June 6th, the first tunnel of the Chongqing-Wanzhou high-speed railway line, the Pingdingqiu Tunnel, which is over 8 kilometers long, was successfully completed 152 days ahead of schedule, marking a significant breakthrough in the construction of the Yuzhou high-speed railway. It lays a solid foundation for the subsequent construction of ballastless track beds and track laying to proceed smoothly.