A 3D render of Chinese stealth jet J-20.
A 3D render of Chinese stealth jet J-20.bbevren/iStock/Getty Images Plus
  • The J-20 is the most advanced stealth fighter jet in China.

  • The jet cost more than four billion dollars to research and develop.

  • The J-20 had encounters with the F-35 in 2020.

The J-20 is the most advanced stealth fighter jet in China.

J-20 stealth fighter jet flies in the sky before the upcoming Airshow China 2021 on September 25, 2021 in Zhuhai, Guangdong Province of China.
J-20 stealth fighter jet flies in the sky before the upcoming Airshow China 2021 on September 25, 2021 in Zhuhai, Guangdong Province of China.Chen Chang/VCG/Getty Images

The jet was introduced to China in March of last year. The jet is one of the most advanced military weapons in China.

In November 2016 it made its public debut at the Zhuhai air show in Guangdong, China.

The US-made F-22 and F-35 jets are the only other fifth-generation jet fighter aircraft in history. The Chinese Air Force had more than 50 J-20 jets.

Since the jets were locked in military encounters in 2020, the Chinese jet has been compared to the F-35.

Chengdu J-20 (left) and Lockheed Martin F-35.
Chengdu J-20 (left) and Lockheed Martin F-35.Ju Zhenhua/Xinhua/Getty Images; rancho_runner/iStock /Getty Images Plus

The US military introduced the F-35 in July of 2015. There are three different versions of the jet: the conventional take-off and landing, the short take-off vertical landing, and the carrier F-35C. The jet takes off and lands in different ways.

The F-35 is the most advanced fighter jet in the world, with very low observable stealth, advanced sensors, information fusion, and network connection.

There is stiff competition from the J-20.

According to the Sou th China Morning Post, a top US Air Force general was impressed by the encounters between the F-35 and the J-20.

It is too early to tell if the J-20 will be more like the F-35 or not. The Chinese pilots were flying the jet.

The J-20 has a length of 75 feet and a height of 16 feet.

J-20 stealth fighters in training.Xinhua/Li Shaopeng/Getty Images

The jet's maximum speed is 2,468 kilometers per hour and it has a travel range of over 6,000 kilometers. The Australian Air Force says the F-35A has a maximum speed of 1,960 kilometers per hour and a range of 2,200 kilometers.

There are different versions of the J-20.

A J-20 stealth fighter jet performs aerobatics during the 13th China International Aviation and Aerospace Exhibition, or Airshow China 2021, in Zhuhai, south China's Guangdong Province, Sept. 28, 2021.Liu Dawei/Xinhua/Getty Images

The J-20A is the first-ever version of the jet, and the J-20S is the first twin-seat stealth fighter jet.

According to a military website, China has the ability to develop a bomber, electric warfare aircraft, and a carrier-based variant of the jet.

The J-20 was originally fitted with Russian engines.

J-20 stealth fighter jet flies in the sky before the upcoming Airshow China 2021 on September 25, 2021 in Zhuhai, Guangdong Province of China.Chen Chang/VCG/Getty Images

The jets are said to beUpgrading their Russian-made engines to the WS-15 afterburning turbofan engine. The J-20s will be fitted with Chinese-made engines, according to a source.

The engine upgrade was to bring its performance closer to the F-22, according to a 2020 report. The engines would increase the ability to fight.

The jet costs between $100 and 120 million per unit.

J-20 fighter jets fly in formation during a flight performance to celebrate the 100th anniversary of the founding of the Communist Party of China (CPC) in Beijing, China, July 1, 2021.Costfoto/Future Publishing/Getty Images

The cost of the jet in the early 2000s was estimated to be between 600 and 500 million Chinese renminbi. The cost of the jet has increased since then according to multiple reports.

The research and development cost for the jet was estimated to be over 4 billion Chinese renminbi.

The original article is on Business Insider.