Of course "WE" don't know, I didn't say "WE" did, that's why as the AFB, I included this affirmation of the brothers "observation" . So while "we" obviously don't know, its patently obvious, that the inlets where reshaped and reduced in size to optimize airflow over the airframe and airflow through the Al-31s????? Will they retain these same inlets, when they do put the WS-15 in the airplane, which they will when it is ready, I rather doubt it, because the WS-15 will flow more air by volume, hence I would expect the intake to be at least slightly enlarged... this would lead us to believe at least for now the AL-31s or even WS-10s will be the engines that power the next 2-4 years of J-20? are there possibilities of the F-117s, uuummmmmhhh, maybe? don't be offended, I am after all the "Brat". Just think about it a little bit, I've been watching these things for a long time.
You are a bright lad, and you are on the right track, keep asking questions, I do, and I am often surprised what I have learned here on SDF.... glad to have you on board as well bruda!