An aerial photo shows the construction site of Beijing's new airport in southern Daxing district in Beijing. The new international airport is taking shape and already has a roof. The airport will take pressure off Beijing Capital International Airport in the northeastern suburbs and is expected to start trial operation in October 2019. [Photo by Yang Zhiyong/chinadaily.com.cn]

An aerial photo shows the construction site of Beijing's new airport in southern Daxing district in Beijing. [Photo by Yang Zhiyong/chinadaily.com.cn]

A design sketch of Beijing's new airport.