In the mountain areas of northeast Jilin Province, a 401-kilometer route with 19 stops remains in operation after 54 years and it has become the only green train running between the cities of Jilin and Tumen. It takes the passengers about 8 hours to complete the trip while a high-speed train needs only 2 hours. However, the green train is still well received by the residents along the route because of the low price as well as its convenience for those living in small places without high-speed rails. It transported more than 600,000 passengers in 2016. Passengers call it "the warm train". [Photo/China Daily]