@Grandy
We had this discussion here already "ad nauseum" and there are actually two parties here: The one side which is jumping high o the bandwagon that the J-20 uses a WS-10, or already WS-15 or - IMO the most unlikely version - a hybrid engine using the WS-10's core mated with the AL-31FN's nozzle.
For the other side is confirmed that it is an AL-31N since all evidence and external details confirm this: it looks like this engine, Saturn and CAC have a long established relationship and latest reports confirm this too.
If You are interested, this might be worth a read for You:
https://www.facebook.com/permalink....908984705&id=611223845748378&substory_index=0
Bu please take Your time and read a bit the arguments of both sides and come to Your own conclusion.
Honestly I'm glad to notice a subtle change in Your attitude: At least You no longer pretend it
IS a WS-10 and even more a WS-15. I remember some very harsh words from You after my reply to Your claims where You repeatedly pretend the J-20 is already flying with WS-15.
Anyway ... I'm still very much sceptical about Your theory of a MIX, since this is technical impossible or at last not logical: To add an AL-31FN's nozzle on a WS-10 is plain stupid esp. if the WS-10 is itself an efficiently working engine. That does not exclude that this latest specialised AL-31FN might use certain
WS-10 technology, but it is still an AL-31FN.
IMO the most likely version which would also explain these reports about an indigenous engine is, hat it is plain and simple a special custom-tailored version jointly-developed and esp. China-funded version, that is PR-wise speaking a "Chinese" engine, but strictly spoken it s a development of the AL-31FN of some sort.
Deino