ARH HQ-9 missiles are probably already offensive enough in the first place. Or at least have all the necessary potential to be so. Moreover, such unification frees cells for stand-off ASW weapons, too.My point being that the role of destroyers kitted out for an AAW role mightn't necessarily be the case given the (speculative) role other platforms might play. Potentially freeing up some of that loadout for more offensive weapons etc would be a boon. I haven't seen a single picture nor any information showing what they put in those tubes, nor do I think I'm likely to. We just assume it similar to what we have seen/know to be the case on other ships. However with a greater diversity we might see some interesting things if some of that is potentially freed up. Already it's clear the PLAN is past aping USN force structure, adopting platforms such as the 076 that don't have a clear analogue. But it's a broad and open thing as to where it might lead, and I apologise for leaning so far into theorising.
So "AAW" role isn't really just AAW - it is just a line combatant of the CSG, creating an upper(AAW/ASuW/Counter-space) and lower(ASW) denial hemispheres, with far larger "flat" engagement zone reliant on external data (fuzed battlefield picture).