Visitors stand near a screen showing Chinese military equipment near a sign marking the 100th founding anniversary of the Communist Party of China, at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

Visitors look at a model of WJ-700 armed reconnaissance drone displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A model of a lander, part of China's Tianwen-1 space mission to Mars, is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A 609 intelligence radar of Chinese People's Liberation Army (PLA) is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A member of Chinese People's Liberation Army (PLA) Air Force attends the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

Visitors stand near a screen showing B611MR missiles at the booth of China Aerospace Science & Industry Corporation Limited (CASIC) at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A model of Chang'e-5 lunar probe, part of China's space mission to the moon, is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A model of GJ-11 stealth armed reconnaissance drone is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

Visitors stand near a model of WZ-7 high-altitude reconnaissance drone displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

People visit the Pratt & Whitney booth at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

Visitors stand near CM-401 anti-ship missile weapon system displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

Models of Long March rockets for China's space missions are seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A WL-10 drone is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A Wing Loong I drone is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A visitor poses with a Y-20 heavy transport aircraft displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

People visit the booth of Chinese People's Liberation Army (PLA) Air Force at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

People walk past models of missiles and military vehicles displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

Female members of Chinese People's Liberation Army (PLA) Air Force visit the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

Visitors look at models of military equipment displayed at the China Aerospace Science & Industry Corporation Limited (CASIC) booth at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A model of Chinese Mars rover Zhurong, part of China's Tianwen-1 space mission, is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A model of the return capsule for China's manned space missions is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

Models of People's Liberation Army (PLA) equipment, which took part in the 2019 parade marking the 70th founding anniversary of the People's Republic of China, are seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A H-6K bomber is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.

A model of Boeing 737 Max airliner is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021. Image used for illustrative purpose.Aly Song REUTERS

A WL-1D drone is seen displayed at the China International Aviation and Aerospace Exhibition, or Airshow China, in Zhuhai, Guangdong province, China September 28, 2021.