China's high-speed rail network passes 50,000km mark
China's sprawling high-speed rail network passed 50,000 kilometres (31,000 miles) in total operating distance with the opening of a new line on Friday, state media reported. The country has the world's largest rail network - one-fifth longer than the circumference of the earth. The trip begins in the city of Xi'an - home to China's famed Terracotta Warriors - and ends in Yan'an to its