I assumed that you can run unicode version of SAS, but it run against en_US locale. If so, the easist way to correct your issue is to change locale from en_US to zh_CN in nls/u8/sasv9.cfg (find -LOCALE en_US, then change en_US to zh_CN), which make sure all your outputs are in Chinese except your GUI. You also need to use the new attached utf-8 version of statrep_macros.sas.
Sorry I am not familiar with Latex, so I cannot confirm if my way works.
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