A visitor looks at the head of a CRH (China Railway High-speed) Harmony bullet train at an exhibition for the Seventh World Congress on High Speed Rail in Beijing December 7, 2010.

A train attendant (L) helps a passenger to adjust her seat at the business class carriage on a CRH 380A bullet train travelling on the newly built high-speed railway between Shanghai and Beijing during a test ride departed from Shanghai June 16, 2011.

Workers clean the exterior of a CRH 380A bullet train serving the newly built high-speed railway between Shanghai and Beijing during its debut test at the Hongqiao Railway Station in Shanghai May 11, 2011.

A train attendant stands inside a CRH 380A bullet train serving the newly built high-speed railway between Shanghai and Beijing during its debut test at the Hongqiao Railway Station in Shanghai May 11, 2011.

A high-speed train travels on the newly built Zhengzhou-Xi'an railway in Zhengzhou, Henan province January 17, 2010.

An actress (C) dressed as China's first female emperor Wu Zetian is accompanied by other actors, dressed as her entourage, walk after their ride on the maiden journey of a high-speed train from Zhengzhou to Xi'an, Shaanxi province, to celebrate the start of the train service, February 6, 2010.

A labourer cleans the floor beside a China Railway High-speed (CRH) train preparing for the operation ceremony from Wuhan to Guangzhou in Wuhan, Hubei province, in this December 26, 2009.

A resident rides a tricycle past the head of a CRH (China Railway High-speed) Harmony bullet train outside an exhibition for the Seventh World Congress on High Speed Rail in Beijing December 7, 2010.

A high-speed train travels on the new Wuhan-Guangzhou railway in Wuhan, Hubei province, December 26, 2009.

A female construction worker watches a train pass on the new high-speed railway line between Shanghai and Hangzhou on the outskirts of Shanghai October 26, 2010.