Two collapses in a tunnel on the Yuhuai railway line between Tongren and Yangtou, both in Guizhou province, have caused a disruption to train services in the region. The collapses, which occurred on 24 and 25 April, forced train services between Chongqing and Chengdu and Chongqing and Dazhou, for example, to be diverted from their normal routes.

The Yuhuai line, which runs from Chongqing to Huaihua in Hunan province, was opened in late 2005.