What fact do u based on to come to conclusion Chinese engine are unreliable? Your ZDK-03 AWACS are running on Chinese engine, so as Z-9 helo. How many crashed?Every inference is based on facts, not on "intuitions".
Russian and Chinese engines options installed on J-10C are highly unreliable. Down time and turn around time is high.
Inducting J-10C is a waste of valuable financial resource.
PLAAF J-11B, J-11BH ,J-16 running on Chinese WS-10 engine so far has zero crashed compare to Su-30MKK, J-11A and J-10A ,all running on Russian AL-31F engine has crashed a few times.