Q. Could you introduce your family?

Let me introduce my family.
There are 5 in my family including me.
They are father, mother, grand mother, younger brother and me.
My father is a professional engineer. He is supervising a factory nowadays.
He devoted his work and he is so busy.
I'm surprised he always get up at 4 am and come back home at 10 pm almost every day.
My mother is a housewife.
Housework never ends but she enjoy her life by learning instruments like harmonica and saxophone when she has free time.
I appreciate she always support me.
My grandmother is volunteering for local community.
She is 70's but an outgoing person and she has many activities.
Finally, y brother works in a company he is diligent and he lives life to the max.
That's about it for the introduction of my family.