China's answer to the United States' F22 and F35 is the ramped up arrival of the J-20s. China's quest for its global dominance is adding new J-20 stealth fighter jets, also known as the "Mighty Dragon," which is the East Asian country's answer to the United States' F22 and F35 military jets.
The Chinese aircraft likely falls well behind the Su-57 in terms of raw kinematic performance both in terms of maneuverability and high-speed supersonic performance.
Xi Jinping has told his military to focus on "preparing to go to war," and the drills with the J-20 certainly suggest that military leaders are heeding that call.