The last "green-skinned" train running between Hefei and Huaibei departs the Huaibei station as a passenger waves goodbye in Huaibei, East China's Anhui province, July 9, 2014.

As shiny bullet trains rush past new stations, China is saying goodbye to its older green trains, known for their distinctively slow pace and lack of air conditioning. The 'green-skinned' trains first started running in the 1950's and were heavily used for three decades. [Photo by Yu Junjie/ Asianewsphoto]