How to use regular expression or code to distinguish between non english character and non english escape charater.

This may not be the right place. I have a question: In ascii characters , a-z are all characters and the rest are all escape characters. We can use regular expression as \w and \W respectively. But in other languages like Japanese or Chinese have different type of full stop, but in regular expression they all related to \W including their characters. Is there a way in Regular expression or in c# code can distinguish between jap/chinese character and jap/chinese type escape character. 
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