On June 14, Yanjiazhai Tunnel of Guiyang South High speed Railway contracted by China Railway 11th Bureau was successfully completed. The tunnel is located in Dushan County, Guizhou Province, with a total length of 1670 meters. The successful completion of the tunnel laid a solid foundation for subsequent construction. The designed speed of Guinan High speed Railway is 350 kilometers per hour, which is an important part of the main channel of China's "eight vertical and eight horizontal" high-speed railway from Baotou to Haikou. Photographed by Xinhua News Agency reporter Liu Xu
(Editor in charge: Chen Yue, Liu Juntao)
