The most Chinese Muslims belong to sunni muslim. But if you ask a Chinese muslim if he belong s to sunni, he perhaps wouldn't know how to reply. Because we were isolated too long from the world. But when we were children, we were taught six main beliefs. We were told that a muslim should believes in :
Angels of Allah
Authority of the books of Allah
the Day of Judgment
My grandfather ever told me those are our Iman! It is that I accepted the earliest belief education.
Now I already know all Sunni Muslims are united upon the six pillars of iman in belief.