China will invest 4 billion yuan (US$484 million) in building a second double track electrified railway project through Northwest China's Gansu and Qinghai provinces, a local official said on Tuesday.

　　The planned 169.9-kilometre-long dual track electrified railway runs from Lanzhou to Xining, capital cities of Gansu and Qinghai, with a designed speed ranging from 160 to 200 kilometre per hour. Construction begins in the latter half of this year.（China　Daily）