Look out when he is loading his salvo, use reversal and intentionally go into where he is shooting to maximize the reversal effects either at him or another enemy with lower HP to instantly kill them.
Something most people don't realise is that Ying can do a lot of Damage Output.
Which results in people running right in to kill her and then end up dying.Try to keep distance and kill her clones to decrease escape and healing options, then go in.