The construction of the trackless railway section of the Beijing underground section of the Beijing-Tangshan intercity railway has been completed.

On the 31st, the construction of the ballastless track in the underground section of the Beijing segment of the Beijing-Tangshan intercity railway, undertaken by China Railway 14th Bureau, was completed, marking the completion of the main project of the Beijing-Tangshan intercity railway and laying a solid foundation for its opening and operation. The Beijing-Tangshan intercity railway is led by Beijing-Tianjin-Hebei Intercity Railway Investment Co., Ltd., linking Beijing and Tangshan in Hebei Province. It is a landmark project of the integrated transportation system in the Beijing-Tianjin-Hebei region. The Beijing underground section is the "last link" of the entire line.