What does all of you mean?
all of you
Definition
Polite: addresses a whole group of people or readers.
Example sentences
New students, if you're going to study, which is better: the library or a café?
New students, if you're going to study, which is better: the library or a café?
For all these reasons, new students, I recommend the library.
For all these reasons, new students, I recommend the library.