Okay that might be a stupid question, but anyway... I once read that you don't ask people in China (you don't know well) how old they are. Is that even right? For example I've been chatting with a girl from China lately and now I'm afraid to ask about her name.
My idea was that probalby you shouldn't ask elderly people about their age but teens or people about your own age shouldn't be that big of a problem, am I right?
However, I'm feeling quite stupid now. Thanks for your answers!
I don't find the need to ask for people's ages either. It's disrespectful to ask an elder their age. If someone's in school, just ask for their school year. Asking a peer 幾年次 goes hand in hand with asking which schools they went to and their hometowns, and is an indirect way of knowing if they are younger or older than you. Plus it avoids the 實歲 and 虛歲 confusion.