Ma, from Anhui, lives with her son, daughter-in-law and granddaughter in a rented room in Beijing. At first, Ma guarded bicycles from 5 a.m. to 11 p.m. every day. She couldn't sleep well at night. Now she and her son take turns to guard the bicycles with monthly revenue of more than 1,000 yuan. (Chinanews/Lin Peiqing)