China’s 400km/h trains getting closer to debut, numbering-system change hints

China’s national rail operator has added a new service category for high-speed trains running above 350km/h to accommodate faster routes in the future, signalling the impending commercial debut of its newest and fastest train model and potentially marking another milestone for the world’s fastest train fleet. China State Railway Group’s overhaul of its train numbering system would introduce the prefix “X” – short for xin, the Chinese word for “new” – for Fuxing trains with a maximum speed higher