This is the 585th most frequent Vietnamese word.
nào
The Vietnamese word "nào" means "which," "what," or "any" depending on context, and it can also be used to express urging or emphasis.
Here, 'nào' is employed in a generalizing sense to refer to any item in the category.
Hội thảo nào cũng rất hữu ích.
Every seminar is very helpful.
Here, 'nào' is used as a question particle indicating the selection inquiry.
Bạn thích quyển sách nào?
Which book do you like?
In this case, 'nào' is used to express an urging or calling out to action.