Stretching more than 92 kilometers, the new intercity railway line consists of two sections. Apart from the link between downtown Beijing and the new airport, which opened last year, the section linking the airport with Xiong'an will see trains operate at a maximum of 350 kilometers per hour when put into service, said Deng Yinjie, deputy director of the company's project management department.

To make the line a world-class high-speed railway offering fast, smooth and comfortable service, railway experts relied on the construction experience of the country's previous high-speed railways and carried out technical research on the rail track structure.

"It's a new challenge beyond the current track smoothness across the world," said Gao Zengzeng, a track expert from the China Railway Design Corporation, adding that with precise soldering of the track in place, the high-speed trains are able to run more smoothly and steadily.