Data showed that train trips on the Beijing-Shanghai high-speed railway had surpassed 220 million since its debut three years ago.
Passenger traffic volume reached 178,000 in 2012 and 230,000 in 2013, respectively. The number climbed to 272,000 in the first half of this year.
The 1,318-kilometer-long railway links the country's prosperous Pan-Bohai and Yangtze River Delta economic zones, cutting travel time between the two regions to less than five hours.