Recently, good news came again from Huize County, Qujing City: the entrance construction of the Ningjingli Tunnel undertaken by the Section 6 project department of the Yunnan-Guizhou segment of the Chongqing-Kunming High-Speed Railway, under China Railway 12th Bureau Group, surpassed the 2,000-meter mark in excavation, marking another major breakthrough in the construction of the Yunnan-Guizhou segment of the Chongqing-Kunming High-Speed Railway and laying a solid foundation for completing the construction tasks with high quality.

The Ningjingli Tunnel on the Chongqing-Kunming High-Speed Railway has a total length of 6,327 meters and is a key controlling project of the Yunnan-Guizhou segment. It is excavated from two portals, and 3,670 meters have been completed so far. To complete the milestone tasks ahead of schedule, the builders formulated a construction plan suited to the project's characteristics, adhered to scientific planning, reversed the construction schedule, adopted precise measures, and rationally allocated personnel, materials, and mechanical equipment, continuously improving tunnel excavation efficiency and driving safety and providing strong support for improving quality and accelerating the project's construction.

Since entering the site, the construction personnel have consistently followed the guiding principle of "ensuring workmanship through equipment, ensuring quality through workmanship, and ensuring safety through quality." During the construction of the Ningjingli Tunnel, they have worked on both hard and soft capabilities, deeply integrating mechanized, intelligent, and information-based construction, continuously improving tunnel excavation efficiency and driving safety, and striving to promote the high-quality construction of the Chongqing-Kunming High-Speed Railway.