早安 zǎo ān is also heard. I would say that 早! was more commonly heard than 早上好!
When I was studying Chinese under a teacher who was Taiwanese, she taught us that "good morning" was "早安." So this question threw me off a bit. Thank you for the clarification.
Yep. When you see someone in the morning you can say "早上好！" It's also common to just say "早！"
(Hint: you can paste into google translate and hit the speaker button to hear)
Worling in the north, Beijing in particular, tjis is the greeting most people use.
i learned 早上好 refers to early morning, like before 10 am. otherwise just 早.
Kursusnya Inggris - Mandarin. Jadi nerjemahinnya ke Inggris, bukan Indonesia.