If I ask you a question (问题) (wen4 ti2): Do you know how to greet people in Mandarin-Chinese?
I am sure many of you will answer with confidence (自信) (zi4 xin4): “Of course. (当然) (dang1 ran2) I know it. (我知道) (wo3 zhi1 dao4) 你好! (ni2 hao3) (hello)”
Let me tell you: “你好” is just one way to greet people.