WUHAN, CHINA - FEBRUARY 2:  Staff clean a CRH train at the New Wuhan Railway Station on February 2, 2010 in Wuhan of Hubei Province, China. According to the National Development and Reform Commission, China's passenger traffic is expected to reach 2.5 billion during the 40-day 'Chunyun', or Spring Festival travel rush, which started from January 30 this year. Getty Images logo Getty Images 24 months ago

WUHAN, CHINA - FEBRUARY 2: Staff clean a CRH train at the New Wuhan Railway Station on February 2, 2010 in Wuhan of Hubei Province, China. According to the National Development and Reform Commission, China's passenger traffic is expected to reach 2.5 billion during the 40-day 'Chunyun', or Spring Festival travel rush, which started from January 30 this year.