Editor's Note: Booming Chinese cities are seeing numerous migrant construction workers flocking to them as high-rise buildings spring up. They exchange their homes for the work shed at a construction site in cities they don't belong to. They bring life and color to the bare and dull construction sites where they live.

However, once a building is completed, they have to leave what they create, to its owners. Indeed, they live in a busy concrete jungle. What may seems real and within sight at the moment is indeed faraway and unattainable in their lifetime. 

Workers install glass at a construction site in Yanjiao, North China's Hebei province, which is in close proximity to Beijing, on Dec 16, 2014. [Photo by Wang Jing/Asianewsphoto]