The mainland plans to build the world's biggest urban rail network as it battles to get people off increasingly traffic-snarled roads in its major cities and onto public transport.
Beijing has accelerated an already aggressive plan to build thousands of kilometres of rail lines in the nation's expanding cities to cope with worsening traffic congestion.
China is already second only to the United States in terms of the size of its urban metro rail network, but will become the biggest by 2012.
It is building 500km of urban metro rail lines every year.
Currently, 25 cities across the country have been given the green light to build metro rail networks.
It is expected that 87 metro rail lines with a total length of 2,495km will be built by 2015, according to the China Railway Construction Corp (CRCC), a leading Chinese rail construction firm listed in Shanghai and Hong Kong.