You can't really use "Great morning" as a greeting; it has to be "Good morning". It might seem that if good is OK, then great is even better, and in many contexts that's fine -- you might say "Have a great morning!" as a closing -- but in the current context, it doesn't work.

(Besides, it's afternoon where I am!)

Great morning

Great morning - I woke up early deliberately. I want to do something in the morning, like what I am doing now。 I feel good, feel my brain getting clear, all good of my body conditions are good. How about you? How often do you wake up in the early morning?

[Good job.]