Firefighters react during a mock plane fire as part of an emergency drill held at Pudong International Airport in east China's Shanghai, Oct. 16, 2020. (Xinhua/Chen Fei)

A helicopter transfers "injured" passengers during a mock plane fire as part of an emergency drill held at Pudong International Airport in east China's Shanghai, Oct. 16, 2020. (Xinhua/Chen Fei)

Passengers are evacuated during a mock plane fire as part of an emergency drill held at Pudong International Airport in east China's Shanghai, Oct. 16, 2020. (Xinhua/Chen Fei)

Police officers and dogs enter a passenger plane to search and remove mock explosives as part of an emergency drill held at Pudong International Airport in east China's Shanghai, Oct. 16, 2020. (Xinhua/Chen Fei)

Firefighters react during a mock plane fire as part of an emergency drill held at Pudong International Airport in east China's Shanghai, Oct. 16, 2020. (Xinhua/Chen Fei)