Should professors with Chinese names be addressed with surname only or both names? How would I address a professor with a Chinese name?
I am unsure whether I should use only the surname, or both forename and surname, because the order of mentioning forename and surname is reversed.
When my professor's name is forename: Yi, surname: Zhang, should I then address him with


  Dear Professor Zhang,


or with


  Dear Professor Zhang Yi,
Being an Asian myself, I'd use 'Dear Prof. Zhang.'

In Chinese culture, it can be considered rude for a junior to address their senior by the full name, that's just the way we're brought up to address our seniors, well at least for me...