Train tracks symbolize life.

Train tracks imply that life is like a criss-crossing endless track. We are lonely in the long journey, looking for, identifying, heading for the right path, reaching the desired place and realizing the long-lost dream. If we are lonely dreams on the journey, then the locomotive is a lonely dream that a group of people are looking for, crossing the Gobi desert, galloping on the viaduct and roaring in the tunnel. Wherever it goes, its long figure raises flying dust, it walks around, for the yearning of countless people, for them to reach the sacred place in their hearts, but it just runs, but this is its dream.