Chinese Railways is the national railway system of the People's Republic of China, operated by China Railway. It is one of the largest and most extensive rail networks in the world, covering over 77,000 kilometers of track, including high-speed rail lines that connect major cities. The high-speed trains, known as CRH (China Railway High-speed), can reach speeds of up to 350 km/h (217 mph). This rapid transit system has significantly reduced travel times across the country, making it easier for people to commute and travel for business or leisure.