Zhou Danlin (L), a railway policewoman from Hefei Railway Administration, gives a toy to Xu Ruihao (C) on the T3089 train from Hefei, east China's Anhui Province, to Guangzhou, south China's Guangdong Province, on Feb. 12, 2019. Xu, accompanied by his parents, leaves his hometown for Zhejiang, the province where his parents work, after visiting his grandparents in Guangzhou. As the Spring Festival holiday ended, people flocked back to cities where they work. (Xinhua/Zhang Duan)