Would this be the Chinese engine that requires servicing every 30 hours? Even the dumbest of countries would say "no thank you"
There's a reason why the Chinese 5th gen prototypes still use the AL-31 engines... its because the Chinese engines are a good 10 years away from being considered a viable replacement for the Russian alternatives. And somehow Pakistan wants to export a fighter built by China with Russian Engines into the global market and you think the Russians are worried? Russians are probably all laughing their butts off.