Yang Wei, who designed the J-20 fighter, said he was inspired to develop Chinese stealth aircraft from American doctrine.

The J-20 stealth fighter was developed based on inspiration from the idea of aircraft production and the theory of air warfare of the United States, Yang Wei, general engineer of the Chengdu Aircraft Design Institute (CADI), for

Yang Wei designed the J-20, China's first stealth fighter.

The two leading candidates are now a modified variant of the J-20 line developed by CADI and the stealth fighter FC-31 of the Shenyang Aircraft Design Institute, which is considered a "F-35 session fighter."

Yang Wei believes that the J-20 is a superior solution to the FC-31, which has been studied based on designs from the Soviet era.

"If the Chinese leadership chooses FC-31 as the new fighter platform, it will take at least 10 years for it to reach full combat readiness. At that time, the US has gone further," said a national official.

Military expert Zhou Chenming in Beijing said that the CADI master wanted to prove J-20 is not only a fifth generation fighter, but also a platform to apply many new technologies to overcome the shortcomings.

"Chinese designers were heavily influenced by Soviet and Russian thinking, forcing them to focus on the aircraft's combat capabilities, ignoring many other factors such as electronic systems and weapons."

However, J-20 has some weaknesses compared to FC-31 in fighter role.