And hence I can only go by what I know to be the design iteration cycles I am familiar with in the west and extrapolate to the papers I have picked up and read published in China. As far as I can see, China still has some major hurdles to cross w.r.t thermal barrier coating matrix application (esp reliability while maintaining tolerance) and the iterations for their optimised geometries.
This is highly proprietary stuff, in fact each company tackles it differently with nuances they specifically researched. The sensitivity of this when it comes to military engine performance is also very big...its classified largely even in the west (rather they tend to release ranges from 10 years prior to current to keep some buffer between what they have in operation right now as the frontier).
But because of the secrecy, it also means you can push it through for realisation faster and accept the limitations for the sake of dealing with the production side issues in the mean time.....but opponents can make a fair guess of it if they have charted the path before. There are no quick easy miracle fixes/leapfrogs here....materials technology comes with some very long term trial and error testing and validation.