Exactly right. Since CJK is a unified unicode range for japan, china and korea I can’t do much. For me is interesting how modifying the GREP style order will make the next country fail.

If i place china style on top and japan style at the bottom then the chinese document will not work but the japanese will. If its for China, then the China style has to be at the bottom of the order. If its for Japan, then the Japan style has to be at the bottom of the order. Same thing for Macau.