Photo taken on Sept. 16, 2020 shows Beijing Daxing International Airport Gu'an City Terminal in Gu'an County, north China's Hebei Province. Beijing Daxing International Airport Gu'an City Terminal opened on Wednesday. Passengers can go through check-in and luggage check-in procedures at the terminal, and take the airport bus to Beijing Daxing International Airport. Gu'an in Hebei Province is adjacent to the Daxing airport. (Xinhua/Zhang Chenlin)

A passenger checks in at Beijing Daxing International Airport Gu'an City Terminal in Gu'an County, north China's Hebei Province, Sept. 16, 2020. Beijing Daxing International Airport Gu'an City Terminal opened on Wednesday. Passengers can go through check-in and luggage check-in procedures at the terminal, and take the airport bus to Beijing Daxing International Airport. Gu'an in Hebei Province is adjacent to the Daxing airport. (Xinhua/Zhang Chenlin)

Staff members work at a check-in counter at Beijing Daxing International Airport Gu'an City Terminal in Gu'an County, north China's Hebei Province, Sept. 16, 2020. Beijing Daxing International Airport Gu'an City Terminal opened on Wednesday. Passengers can go through check-in and luggage check-in procedures at the terminal, and take the airport bus to Beijing Daxing International Airport. Gu'an in Hebei Province is adjacent to the Daxing airport. (Xinhua/Zhang Chenlin)

Photo taken on Sept. 16, 2020 shows a view of Beijing Daxing International Airport Gu'an City Terminal in Gu'an County, north China's Hebei Province. Beijing Daxing International Airport Gu'an City Terminal opened on Wednesday. Passengers can go through check-in and luggage check-in procedures at the terminal, and take the airport bus to Beijing Daxing International Airport. Gu'an in Hebei Province is adjacent to the Daxing airport. (Xinhua/Zhang Chenlin)

A passenger gets airport bus ticket at Beijing Daxing International Airport Gu'an City Terminal in Gu'an County, north China's Hebei Province, Sept. 16, 2020. Beijing Daxing International Airport Gu'an City Terminal opened on Wednesday. Passengers can go through check-in and luggage check-in procedures at the terminal, and take the airport bus to Beijing Daxing International Airport. Gu'an in Hebei Province is adjacent to the Daxing airport. (Xinhua/Zhang Chenlin)

Passengers wait to take airport bus at Beijing Daxing International Airport Gu'an City Terminal in Gu'an County, north China's Hebei Province, Sept. 16, 2020. Beijing Daxing International Airport Gu'an City Terminal opened on Wednesday. Passengers can go through check-in and luggage check-in procedures at the terminal, and take the airport bus to Beijing Daxing International Airport. Gu'an in Hebei Province is adjacent to the Daxing airport. (Xinhua/Zhang Chenlin)