A big placard reading "Scientific management, people oriented, harmony and happiness" sits between two rows of makeshift houses at a construction site in Nanjing, East China's Jiangsu province on June 26, 2012. The project managers built a number of such makeshift houses for 20,000 migrant workers working at an apartment construction site. A large number of couples' apartments were also made available to allow the partners of the workers to live on site. Newspapers cover the glass to keep out prying eyes and allow couples some privacy, a move experts believe will improve the quality of life of migrant workers. [Photo/Asianewsphoto]

Mothers play with kids in front of a makeshift apartment built for couples at a construction site in Nanjing, East China's Jiangsu province on June 26, 2012.[Photo/Asianewsphoto]