A couple smile on a train at the Chengdu Railway Station in Chengdu, capital of southwest China's Sichuan Province, on Feb. 25, 2007. The train from Chengdu to Shanghai in east China was the first prepared by the station specifically for migrant workers. [Xinhua Photo]

Peng Xiaoli walks to the Chengdu Railway Station to board a train in Chengdu, capital of southwest China's Sichuan Province, on Feb. 25, 2007. Her train from Chengdu to Shanghai in east China was the first prepared by the station specifically for migrant workers. [Xinhua Photo]

Passengers bid farewell to their relatives at the Chengdu Railway Station in Chengdu, capital of southwest China's Sichuan Province, on Feb. 25, 2007. Their train from Chengdu to Shanghai in east China was the first prepared by the station specifically for migrant workers. [Xinhua Photo]