To guaranteed-hit Mei's downward axe CT, you can use circle, shoot birds, then use it. The birds knock enemies upwards so they can be caught easily on the way down. You don't need the circle input, but sometimes the downwards axe strike can miss. Also make sure the birds are summoned before doing this. Hope this helps! ^^ Edit: If you don't have birds when you use circle, just auto-combo for some damage
To guaranteed-hit Mei's downward axe CT, you can use circle, shoot birds, then use it. The birds knock enemies upwards so they can be caught easily on the way down. You don't need the circle input, but sometimes the downwards axe strike can miss. Also make sure the birds are summoned before doing this. Hope this helps! ^^
Edit: If you don't have birds when you use circle, just auto-combo for some damage