Zhengzhou

metro

A 25.6 km, 22 station subway opened in Zhengzhou in January 2014. The capital of Henan province's first metro line includes a 3.6 km subway section. A six line, 202.5 km system is planned.

Also planned is a 544 km, 37 line light rail network, which is expected to save billions of yuan over the metro construction.

Wikipedia page
China Railways project brief