Aura broke

So I was told (Screamed at.) before that Yang's aura cant be broke just becasue we've never actually seen it break and therfore has infinite durability.

Ok, here is your empirical data that explicitly shows her aura can and will break, and dont tell me that grimm is chewing with double infinity tons and pressure.
And don't give me that Tifa cant punch through her aura crap, if a lowly enemy like a grimm can chew through then Tifa can punch through.