Hello~~!!

Both my brother quarrelled with my aunt and uncle yesturday.
About what? I dunno actually..
Not very angry at my aunt,
But very angry at my uncle.
Why?
Yesturday when they quarrelled,
he was sitting in the living room having his dinner.
Then, my bros and aunt started to quarrel.
some times later, uncle went in to the kitchen,
which is where aunt and brothers are quarrelling.
My grandmother is eating in the kitchen also.
I am in the living room watching the tv.
So now, there are my brothers, aunt, uncle and my grandma
in the kitchen.
After sometimes, my brothers went back to their room.
Then that uncle said this to my grandma,
''你的孙子全部都坏！''
He said those words loudly and fiercely.
I heard them in the living room.
How dare he did this to a person so much older than him!
And that person is my grandmother, his mother-in-law leh!
No respect for elders at all!
I wanted to go into the kitchen and told him off.
But i thought that this might not be a good idea
because things might get worse.
And he said ''全部'', means that he is also
refering to my cousins who are also my grandma's grandchildren.
My cousins they all also didnt do anything to upset him lah.
He should think properly then say mah.
At night, my grandma told my 5th aunt(quarrel is 3rd).
Grandma told her that she is angry at
uncle for saying that ALL her grandchildren are bad.
I think my 5th aunt will also be angry at him.