The Gaosheng No. 2 Tunnel on the Xi'an-Chongqing High-Speed Railway was holed through today, marking a critical stage in the construction of the entire line.

The reporter learned from the Xikun Company of the Beijing-Kunming High-Speed Railway that on October 11, with the successful completion of the final blasting operation, the Gaosheng No. 2 Tunnel on the Xi'an-to-Chongqing High-Speed Railway was holed through, laying a solid foundation for the completion and opening of the entire line on schedule.