Daxing Airport Express starts trial operation

Passengers check in at City Terminal at Caoqiao station of Daxing Airport Express in Beijing, capital of China, on Sept. 26, 2019. The Daxing Airport Express started trial operation on Thursday, and the City Terminal at the Caoqiao station of the Daxing Airport Express was put into operation the same day. (Xinhua/Zhang Chenlin)