The Shanghai Metro is a rapid transit system in Shanghai, China, operating urban and suburban rail transit services to 14 of its 17 municipal districts (except Fengxian, Jinshan and Chongming) and to Huaqiao Town, Kunshan, Jiangsu Province. Opening in 1993 with full-scale construction extending back to 1986, Shanghai Metro is the third oldest rapid transit system in mainland China, after the Beijing Subway and the Tianjin Metro. It has seen substantial growth over the decades, especially during the years leading up to the 2010 Shanghai World Expo, and is still expanding, with its most recent expansions having opened in . It is the largest component of the Shanghai metropolitan rail transit network, together with the Shanghai Maglev Train, the Zhangjiang Tram and the China Railway-operated commuter rail services to Jinshan and to Lingang New City in Pudong.