The Guangzhou Metro (广州地铁) is a metro system in the city of Guangzhou in Guangong Province of the People's Republic of China. It is the fourth city in China to build an underground railway system after Beijing, Tianjin and Shanghai. Construction began in 1993 and the first line was completed and opened in 1997 and 1999. The 60 station system is operated by the Guangzhou Metro Corporation, established in 1992 as a state owned enterprise under the Guangzhou government.