Update: China's high-speed rail mileage tops 50,000 km

BEIJING, Dec. 26 (Xinhua) -- China, home to the world's largest high-speed rail network, has expanded its total operational mileage beyond 50,000 km 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.

The Xi'an-Yan