At 3:30 pm, Sun Jingyun, a staff member of Cainiao Network, loads packages into an unmanned express delivery vehicle at Xiongan citizen service center in Xiongan New Area, north China's Hebei Province, April 1, 2019. The unmanned express delivery vehicle, independently researched and developed by the Alibaba's logistics arm, was recently put into service at Xiongan citizen service center. 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/Mu Yu)