A ticket office is crowded with passengers queuing up to book tickets at Suzhou Railway Station, east China's Jiangsu province, May 6, 2007. According to the Ministry of Railways, a record 5.16 million people travelled on trains on last Monday alone, and from April 28 to May 7, some 45 million people will take trains, up 8 percent year-on-year.(Xinhua Photo/Wang Jiankang)

A ticket office is crowded with passengers queuing up to book tickets at Suzhou Railway Station, east China's Jiangsu province, May 6, 2007.(Xinhua Photo/Wang Jiankang)

Passengers board a train at a railway station in Nanjing, capital of east China's Jiangsu province May 6, 2007. According to the Ministry of Railways, a record 5.16 million people travelled on trains on last Monday alone, and from April 28 to May 7, some 45 million people will take trains, up 8 percent year-on-year. (Xinhua/Reuters Photo)

Passengers board a train at a railway station in Nanjing, capital of east China's Jiangsu province May 6, 2007. According to the Ministry of Railways, a record 5.16 million people travelled on trains on last Monday alone, and from April 28 to May 7, some 45 million people will take trains, up 8 percent year-on-year. (Xinhua/Reuters Photo)