Changsha is building two 39 station metro lines totaling 45.8 km. The first 23.6 km line, with one elevated station and the other 19 in subway, opened for testing in March 2016. Lines 3 - 33.4 km and 24 stations - and Line 4 - 29.1 km and 24 stations - are under construction this year. By 2020, the city expects to have six lines covering 230 km.
Official Home Page