Di Jinsheng, 65, and his wife Ju Yulan, sit in front of their cave-house with six stools reserved for their six children in Dijiahe village, Baishui county, Northwest China'a Shaanxi province, August 26, 2011. Some of their children left the village to work and some married away from their home village.[Photo/Xinhua]

Cheng Xiaolin and his two kids sits, with a seat chair reserved for his wife who left home to work, in a vegetable field in a village of Shuanglong town, Ankang city, Northwest China's Shaanxi province, August 28, 2011.[Photo/Xinhua]