A member of staff stands in front of a CRH high-speed train at Shanghai Hongqiao Railway Station during its test run on May 11, 2011 in Shanghai, China. After 3 years construction, from April in 2008, with total investment estimated at 220.9 billion yuan (around 32.5 billion U.S. dollars), the Beijing-Shanghai high-speed railway begins a one-month trial operation. It is expected to start operation in June this year, with the travel time between the two cities reducing to five hours from the previous 10. (Photo by ChinaFotoPress/Getty Images)

A worker cleans a CRH high-speed train at Shanghai Hongqiao Railway Station during its test run on May 11, 2011 in Shanghai, China. (Photo by ChinaFotoPress/Getty Images)

Staffs stand at the entrance of a CRH high-speed train at Shanghai Hongqiao Railway Station during its test run on May 11, 2011 in Shanghai, China. (Photo by ChinaFotoPress/Getty Images)

A CRH high-speed train leaves Shanghai Hongqiao Railway Station during its test run on May 11, 2011 in Shanghai, China. (Photo by ChinaFotoPress/Getty Images)

Drivers are seen on a CRH high-speed train at Shanghai Hongqiao Railway Station during its test run on May 11, 2011 in Shanghai, China. (Photo by ChinaFotoPress/Getty Images)