Tbh I don't consider aviadarts too impressive, the J-16s always seem to participate in a basic A2G role with unguided rocket pods.
I'm aware J-16s have been involved in Shaheen exercises, but I can't recall on how many occasions J-16s actually left PRC territory (it would be Pakistan anyhow).
AFAIK Falcon Shield exercises occurred in PRC territory.
Anyway, the reason I specified "overseas exercise" and "that far abroad" (Egypt distances) for J-16 and in relation to J-16D, is in the unlikely event of a malfunction or crash or ditch, then the idea of a J-16 (or a J-16D) being lost over international waters or in territory that is not immediately adjacent to China (like Pakistan, Russia) could have some adverse consequences to secrecy/recovery.