The China Railway network covers mainland China with high-speed and conventional rail corridors linking national, provincial, and regional centers. Core high-speed lines include Beijing-Shanghai, Beijing-Guangzhou, Shanghai-Kunming, Xuzhou-Lanzhou, and Guangzhou-Shenzhen-Hong Kong sections within mainland operations. Major hub stations include Beijing South, Beijing West, Shanghai Hongqiao, Guangzhou South, Shenzhen North, Xi'an North, Chengdu East, Wuhan, Nanjing South, and Hangzhou East. The network uses G, D, and C train categories on high-speed and intercity lines, while Z, T, K, and numbered trains operate conventional long-distance services with seating and sleeper accommodation on selected departures.