BEIJING, Jan. 29 -- A total of 4,100 kilometers of new railway lines were put into operation across China in 2022, including 2,082 km of high-speed tracks, data from the China State Railway Group Co., Ltd. showed.

As of the end of last year, China's railways in service had stretched to a total length of 155,000 km, within which the operating length of the high-speed network had reached 42,000 km, according to the group.

Fixed-asset investment in China's railways reached 710.9 billion yuan (about 105 billion U.S. dollars) in 2022, promoting a batch of major projects in the field of rail infrastructure construction.

In 2023, China plans to launch new rail lines of more than 3,000 km, including 2,500 km for high-speed trains, said the group.

The country has built the world's largest high-speed railway network to address people's growing demand for convenient and comfortable travel.