Zhang Yuxuan (L) and her sister say goodbye to their mother with hugs in Shushan District of Hefei, east China's Anhui Province, Aug. 26, 2016. Fourteen-year-old Zhang Yuxuan had to go back to Shaxian County in south China's Shenzhen for school with her sister after a summer time's union with their parents who made a living in Hefei. (Xinhua/Guo Chen)
