Wang Yunya (R) plays with toys on the T3089 train from Hefei, east China's Anhui Province, to Guangzhou, south China's Guangdong Province, on Feb. 12, 2019. Wang, accompanied by her parents, leaves her hometown for Guangzhou, the city where her parents work. As the Spring Festival holiday ended, people flocked back to cities where they work. (Xinhua/Zhang Duan)