"Are you Chinese?"
Somewhat like zjong. If you have trouble with pronunciation you can always type a word in Google translate and listen to the speaker. The Lexilize flashcard app has pretty good pronunciation too. Personaly I find tools like these more helpfull than memorizing all the pronunciation rules, but if that is more your thing there are plenty of videos on youtube where they are explained in depth. It's hard to get by if you don't memorize at least a few. Good luck!