Marrying U without even a ring is a BIG sacrifice?

And you bought it? Then ask yourself in brutal honesty:

WILL I BE HAPPY WITH HIM 5 OR 10 YEARS FROM NOW? (Mind you, suppose nothing will change and everything stays exactly the same for 10 years.) Can I live with that?

Do you have Chinese friends who know you both? What's their opinion? I'm sure your parents are against it, but you obviously don't want to listen to them, right?