Cai Jiwen and his family walk out of train station in Chongqing, southwest China, Feb. 2, 2018. The 46-year-old migrant worker Cai and his wife go back home by train on Feb. 1. Their new home, one of 144 apartments built for relocated residents from poor areas, is located in a settlement in Jiuyin Village of Yuehua Town in Dazhou City in southwest China's Sichuan Province. (Xinhua/Liu Kun)