The CR450AF bullet train with an operational speed of 400 kilometers per hour is debuted in Beijing, capital of China, Dec. 29, 2024. China, home to the world's largest high-speed rail network, has expanded its total operational mileage beyond 50,000 kilometers with the launch of a new high-speed line.

A "Fuxing" bullet train departed Friday morning from Yan'an, a sacred revolutionary heartland in northwest China's Shaanxi Province, for the provincial capital Xi'an, inaugurating the new route. (Xinhua/Ju Huanzong)