What does sain baina uu mean?

"Sain baina uu" is a Mongolian greeting that translates to "Hello" or "How are you?" It's a very common and polite way to greet someone in Mongolia.

It's a combination of two words:

* Sain (pronounced "sayn") - meaning "good" or "well"

* Baina uu (pronounced "bah-nah oo") - meaning "are you?"

Therefore, the whole phrase translates to "Are you well?" or "Are you good?" which is a friendly and polite way to inquire about someone's well-being.