Some questions about the attribute "size"

So the problem is that the characters are being cut off? Normally when people have reported this happening with Chinese characters, the issues has been due to the font being used, and is resolved when another one is selected. Unfortunately, Arial usually seems to be the one that people have most success with, which is the opposite of your experience.

So I’d suggest experimenting with different font names. You’ll need to use exact names for the fonts, which can be found using hints here:

or here: