First line indent

Other than English, I often need to work on Chinese documents on Pages. And in most Chinese documents, it is a requirement to indent the first line of every paragraph by (specifically) 2 character space. While it would be possible to insert 2 full-width space at the beginning of the paragraph, it would not be consistent if "align justify" comes into play. Alternatively, one can specify a specific measurement that is equivalent to 2 character space, but this doesn't work well if one changes the fontsize of the document in overall.

My question is, is it possible to specify an indentation of "2 characters" in Pages documents? Or is there any work-around available other than those that I have tried above?

Many help/advice would be much appreciated.