5 Old Beijing-Zhangjiakou Railway: Sun Yat-sen, forerunner of the Chinese revolution, visited the Jingzhang railway line site in 1912. [File Photo]

This line reminds Chinese people of the country's first self-designed and self-invested rail line, Jingzhang railway line, linking Beijing and Zhangjiakou. It marks the introduction of modern industrial civilization to China.

Zhan Tianyou, China's railway and modern engineering pioneer, was assigned as the chief engineer.

Starting in 1905, the historical project was completed in only four years, two years ahead of schedule.

At a time lacking of advanced machines, the line was built by Chinese people's bare hands.

Jingzhang railway line, also the first section of Beijing-Baotou railway, ran until July 1, 2014.

At present, the old Jingzhang railway line is reserved as a historical site. Several sculptures and museums of Zhan Tianyou are standing along the rail line designed by him.

Zhangjiakou railway station. (Xinhua)