An aerial view of Beijing Daxing International Airport. (Photo: Xinhua)

Elevators and escalators inside the seven-story terminal hall of the Beijing Daxing International Airport. (Photo: chinadaily.com.cn)

The Beijing Daxing International Airport terminal hall. (Photo: chinadaily.com.cn)

A direction board inside the terminal hall of the Beijing Daxing International Airport. (Photo: chinadaily.com.cn)

A billboard shows a 57-day countdown to the opening of Beijing Daxing International Airport on Aug 5 in the Daxing district of Beijing. The new airport will begin operations on Sept 30 and has started selling tickets. (Photo: chinadaily.com.cn)