BEIJING - China has 25,000 km of high-speed railway, accounting for over 60 percent of the world's total, official data showed.

By the end of 2017, China had built and put into service 127,000 km of railway, up 150 percent from 1978 when the country started its reform and opening-up, according to the National Bureau of Statistics (NBS).

The figures came from a report released by the NBS which said China has made great strides in transport system construction.

By the end of 2017, China had built 4.77 million km of highway, up 440 percent from 1978, among which 136,000 km was expressway, said the NBS.