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