Migrant workers prepare to wash up after a long day on a construction site in Jiaozuo city, Central China's Henan province, May 4, 2012. [Photo/CFP]

After work, Zhang Kaoming's family squeeze together and have dinner in a small makeshift shed, which accommodates four people (Zhang, his son, daughter-in-law, and granddaughter), in Jiaozuo city, Central China's Henan province, May 4, 2012. Zhang's family moved here in March and makes a living by doing woodwork. [Photo/CFP]

After supper, workers sit on a bed and watch TV on a construction site in Jiaozuo city, Central China's Henan province, May 4, 2012. [Photo/CFP]

After dinner, Zhang Zhihua and his wife spend some time with a laptop he saved a long time to buy, in a simple shed at a construction site, in Jiaozuo city, Central China's Henan province, May 4. [Photo/CFP]

Migrant workers play cards, the most common recreation for them, at a construction site in Jiaozuo city, Central China's Henan province, May 4, 2012. [Photo/CFP]

Night life in cities generally include drinking, nightclubs, discos wholesale oakley sunglasses, bars, live music, theaters and shows, but for the large group of migrant workers in China, who live isolated lives in their makeshift sheds on construction sites, night life carries a less glamorous meaning, with less activity.