Why Is Russia’s “Stealth” 5th Gen Su-57 Being Mocked In China?

At Airshow China (officially the China International Aviation & Aerospace Exhibition), China officially unveiled its new J-35A fighter jet (commentators quickly pointed out that it obviously draws from the F-35). Russia also brought its newest fighter jet, the self-acclaimed fifth-generation Sukhoi Su-57 Felon fighter jet, only to be ridiculed in China for its shoddy workmanship.