At 2:08 am, Zhang Qingkai, a railway maintainer of China Railway Beijing Group, checks the tracks of the railway line from Beijing to Xiongan in Xiongan New Area, north China's Hebei Province, April 1, 2019. Known as the China's "city of the future", Xiongan is to transform from being a blueprint to a tangible reality starting this year. People living here are taking part in the around-the-clock efforts of building a high-profile city from scratch. (Xinhua/Xing Guangli)