People watch a flight display at the 53rd International Paris Air Show held at Le Bourget Airport near Paris, France, June 20, 2019. The International Paris Air Show kicked off here on Monday and will last to June 23, 2019. (Xinhua/Gao Jing)

People visit the 53rd International Paris Air Show held at Le Bourget Airport near Paris, France, June 20, 2019. The International Paris Air Show kicked off here on Monday and will last to June 23, 2019. (Xinhua/Gao Jing)

A man poses with a pilot-shaped board for photos at the 53rd International Paris Air Show held at Le Bourget Airport near Paris, France, June 20, 2019. The International Paris Air Show kicked off here on Monday and will last to June 23, 2019. (Xinhua/Gao Jing)

People watch a flight display at the 53rd International Paris Air Show held at Le Bourget Airport near Paris, France, June 20, 2019. The International Paris Air Show kicked off here on Monday and will last to June 23, 2019. (Xinhua/Gao Jing)

People visit the 53rd International Paris Air Show held at Le Bourget Airport near Paris, France, June 20, 2019. The International Paris Air Show kicked off here on Monday and will last to June 23, 2019. (Xinhua/Gao Jing)

An Airbus A350-1000 performs during a flight display at the 53rd International Paris Air Show held at Le Bourget Airport near Paris, France, June 20, 2019. The International Paris Air Show kicked off here on Monday and will last to June 23, 2019. (Xinhua/Gao Jing)