The first thing that I would look into is the exact Chinese font that you have. Some will just not display in Titler, where they might in other programs. It also needs for fonts to be 100% compatible, and not all are.
It is more sensitive, than say Photoshop, Illustrator or InDesign, and those three programs are much more font-sensitive, than say a word processing program, like Word. The Titler is about the most font-sensitive program (or sub-program), that Adobe produces.