What kind of tactics and combat doctrine does the PLAAF utilize now that they have state of the art equipment? Wars are one as much by infrastructure, training and doctrine as equipment. Just see the way Israel kicked the cr#p out of the various Arab Air forces in war after war despite the Arab countries having good equipment.
Tactics developed at Dingxin are under wraps. What I do know is that the process some times start with pilots arguing about viable tactics on the ground and immediately ends up with them “proving it” in the air, some times involving multiple sorties that last well into the night.