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China

China has the largest network of high-speed railways in the world. As of 2022 it encompassed over 40,000 kilometres (25,000 miles) of high-speed rail or over two-thirds of the world's total. It is also the world's busiest with an annual ridership of over 1.44 billion in 2016 and 2.01 billion in 2018, more than 60% of total passenger rail volume. By the end of 2018, cumulative passengers delivered by high-speed railway trains was reported to be over 9 billion. According to Railway Gazette International, select trains between Beijing South to Nanjing South on the Beijing–Shanghai high-speed railway have the fastest average operating speed in the world at 317.7 km/h (197.4 mph) as of July 2019.

The improved mobility and interconnectivity created by these new high-speed rail lines has generated a whole new high-speed commuter market around some urban areas. Commutes via high-speed rail to and from surrounding Hebei and Tianjin into Beijing have become increasingly common, likewise are between the cities surrounding Shanghai, Shenzhen and Guangzhou.