Clearly this isn't the dialect I'm accustomed to. I would've said "dù" rather than "ô".
Southern people say dù, Northern people say ô X-D
in other words, different dialects
I write "This is umbrella
Why is this or that not allowed, in english, we use this or that about the same way and it makes full sense ! Why getting this or that wrong... It does not make sense in english, we use this or that the same way... Same value for this or that...