China’s fast passenger tracks network consists of four parts:express rail- way with speeds between 300km/h and 350 kin/h,passenger rail lines with speeds between 200 km/h and 250 km/h,intercity high-speed railways that run China’s fast passenger tracks network consists of four parts: express rail-way with speeds between 300 km / h and 350 kin / h, passenger rail lines with speeds between 200 km / h and 250 km / h, intercity high-speed railways that run