It is also known as Suiyu railway, following the Chinese practice of combining the shortened version of the terminal city's name.

[citation needed] It is classed as a national railway grade I, with two electrified lines, designed for maximum speed of 250 kilometers.

[citation needed] The combined operating distance from Chongqing to Chengdu is only 312 km (194 mi), the entire running time of about 2 hours.

On September 26, 2009, at Chongqing North Railway Station started services bound for Chengdu with CRH1 Harmony EMU trainsets, allowing Southwest China to enter the high-speed rail era.

[citation needed] This saw the creation of Suinan South station and a new alignment from Aikawa to Shizhishan.