People's Republic of China

Operating Lines

Anshan
Beijing
Changchun
Chongqing
Dalian
Guangzhou
Hong Kong
Shanghai
Tianjin
Wuhan

Planned or Under Construction

Chengdu
Harbin
Hangzhou
Kunming
Macao
Nanjing
Qingdao
Shenyang
Shenzhen
Suzhou
Weihai
Wuxi
Xi'an
Zhengzhou

Zhengzhou
planned metro

A 26 km, 22 station subway is under construction, with an opening planned for 2013. The capital of Henan province's first metro line will include a 3.6 km subway section. By 2013, a six line, 202.5 km system is planned to be in operation.

Wikipedia page
China Railways project brief