3. Never address people by their first names first
Chinese people have first and last names like everyone else. However, in China, the last name always comes first. The family (and the collective in general) always takes precedence over the individual. For example, my Chinese name is L? Míng, assuming I am a Chinese, you can safely refer to me as Mr. L? (not Mr. Míng).
Unlike people in the West, the Chinese don't feel very comfortable calling each other by their first names. Only family members and a few close friends ever refer to the man above, for example, as simply "Míng." They may, however, add the prefix lao (lao; old) or xiao (xiao; young) before the family name to show familiarity and closeness. Lao L? (Old L?).