Chengdu–Chongqing Intercity Railway

The Chengdu–Chongqing intercity railway is a 307-kilometre long high-speed railway that connects the cities of Chengdu and Chongqing in southwestern China, with a maximum speed of 350 km/h. The route passes through most of the same cities that the older Chengdu–Chongqing Railway does, but is significantly shorter due to the greater use of elevated sections and tunnels. The line includes four major elevated sections and two tunnels.

Source: Wikipedia