AVIC promo video
1:01 PL-17 ASAT missile
I'd be surprised if that was actually meant to depict a PL-17. The requirements between a LRAAM and an actual ASAT are quite different, and considering some of the other liberties taken in the video it's probably just depicting a generic air launch ASAT capability.
In the same way that the friendly (red force) was fighting off a hostile (blue force) composed of F-22/35 and a flying wing stealth bomber that is not consistent with any real world design, not to mention 052Cs launching LACMs lol.
It does show some notional capabilities that they clearly have in mind of course, with MUMT, AI etc all being "represented" albeit not very well.
The J-20 doing the MUMT is clearly a single seater as well, as opposed to a dual seater that some have attributed it to be. The significance of that is also finite; it should've been long expected/logical to think the single seater J-20 would be capable of MUMT and not exclusive to the dual seater.