China’s metro (MRT) is a nationwide network spanning over 50 cities; below is a city‑by‑city explainer for leading systems, Urban rail transit, covering scale, lines, and usage to help understand how each network operates and what sets it apart.wikipedia+1 National overview of Urban rail China operates 54 Urban rail system as of 2024, the most in the world, and includes 11 of the 12 longest networks globally, reflecting decades of rapid urban rail expansion. An up‑to‑date inventory of urban rail in China is maintained with links to each city’s network, helping track openings, extensions, and future plans across the country. Among these, Beijing and Shanghai anchor the largest systems by…