Zhou Xin plays with her younger brother and mother at a railway station as they wait for a train to eastern Qingdao city, where her father works. During the summer vacation, many children from rural areas visit cities where their parents work, or leave cities for their hometowns because their parents have no time to look after them. The group has been dubbed "Little Migratory Birds", meaning they move between places during the summer and winter vacations. (Photo: China News Service/Chen Li)
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