The Baocheng line was originally proposed in Sun Yat-sen 's 1913 China National railway plan as part of the Datong – Chengdu railway . Construction began in Chengdu on July 1 , 1952 and from Baoji in January 1954 . The line opened on January 1 , 1958 . The Baoji – Fengzhou section electrified in 1961 , becoming the first railway to be electrified in the country . The entire line was electrified in 1971 . Construction of a second track between Chengdu and Yangpingguan began in 1993 and was completed in 1999 . From Yangpingguan to Baoji , the line remains single-track . The railway was badly damaged by the 2008 Sichuan earthquake
2008 Sichuan earthquake
2008 Sichuan earthquake
Baoji–Chengdu railway