China plans to invest 700 billion yuan (103 billion U.S. dollars) on some 4,600km of high-speed railways this year, said a senior official from Railways.

"Under the plan, 700 billion yuan will be invested in railway construction this year, covering 4,613 km new railways," He Huawu, the general engineer of the Ministry of Railways told a forum in Changchun.

China's railway network has covered 6,552km, with about 10,000km of high-speed railways under construction, He said, who also a member of the Chinese Academy of Engineering.

The railways under construction include routes between Beijing and Harbin, Harbin and Dalian, Hefei and Fuzhou, Beijing and Wuhan as well as Shanghai and Nanjing, he specified.

Some of the railways can lead the world in technology, said He, citing China's first self-developed high-speed railway Beijing-Tianjin High Speed Railway, which has trains reaching maximum speeds of 350 km per hour.

China will expand its high-speed rail network across the country, especially in western China, and plans to build another 10,000km railways, according to the Ministry of Railways.