Equation
Lieutenant General
There is a clear "Fear Factor" within China aerospace industry. Let just say there is lack of CONFIDENCE on its domestic engines now and the immediate future. The "body languages" says it all.
If they fear the plane would crashed, people die and lose of "face" then do a lot of UAVs with WS10B, WS13, WS15. They have to be widely used in order to test its limit and reliability.
Bottom line they have to get their confidence up. Right now, I see None.
Confidence? You're talking about a country that just ate your (insert country______) lunch when Turkey decided to take HQ-9 as their chosen air defense system because it was the ONLY ONE that has a 100% kill ratio during testing. If the Chinese can do that with missiles can do that with jet engines as well, and the academia and professions around the world knows it too.