渝万高铁首座8公里以上隧道顺利贯通

Core Points - The Chongqing-Wanzhou high-speed railway has achieved a significant milestone with the successful completion of the Pingdingqiu Tunnel, which is over 8 kilometers long, ahead of schedule by 152 days [1] - The Chongqing-Wanzhou high-speed railway is a crucial part of the national "eight vertical and eight horizontal" high-speed rail network, specifically the Jing-Kun and Bao (Yin) corridors, as well as an important addition to the Chongqing "grid" high-speed rail network [1] - Once completed, the railway will reduce travel time from downtown Chongqing to Wanzhou District to under one hour, greatly facilitating travel for local residents and promoting economic and social development along the route [1]