China's high-speed rail technology has developed rapidly, and it now has the longest high-speed rail network in the world. Since the opening of the first high-speed rail line in 2008, China's high-speed rail network has covered most of the major cities across the country. High-speed rail has not only shortened travel time between cities but also promoted economic development and personnel exchanges along the routes. With continuous technological advancement, China's high-speed rail is developing towards a safer, smarter, and more environmentally friendly direction.